The mechanism by which chemistry and engineering helped transform aluminum from a precious metal into an inexpensive structural material should be explained. Concept Introduction: Aluminum is known to be the world’s most abundant metal. It is the third most common element and present as the 8% of the earth’s crust. It is derived from the mineral bauxite. Pure form of aluminum is soft, corrosion resistant, ductile and has a high electrical conductivity. It is used as foil and conductor cables by alloying with other metals in order to give strength to it. It is known to be the lightest engineering metal with strength to weight ratio. More than the steel, this makes aluminum an important structural material. Opposite to steel, the strength of aluminum increases on decreasing temperature. Thus, aluminum works well in the cold atmosphere. For pure aluminum, the tensile strength is 90 MPa which is increased to 680 MPa for the aluminum alloys treated with heat.

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Answer 1

Question

Chapter 1, Problem 1CO

Interpretation Introduction

Interpretation: The mechanism by which chemistry and engineering helped transform aluminum from a precious metal into an inexpensive structural material should be explained.

Concept Introduction:

Aluminum is known to be the world’s most abundant metal. It is the third most common element and present as the 8% of the earth’s crust. It is derived from the mineral bauxite.

Pure form of aluminum is soft, corrosion resistant, ductile and has a high electrical conductivity. It is used as foil and conductor cables by alloying with other metals in order to give strength to it. It is known to be the lightest engineering metal with strength to weight ratio. More than the steel, this makes aluminum an important structural material. Opposite to steel, the strength of aluminum increases on decreasing temperature. Thus, aluminum works well in the cold atmosphere. For pure aluminum, the tensile strength is 90 MPa which is increased to 680 MPa for the aluminum alloys treated with heat.

Expert Solution & Answer

Explanation of Solution

The increase in application of the aluminum is due to its properties such as strength, recyclability, lightness, formability and resistance to corrosion. The types of product ranges from the packaging foils to the structural materials.

Aluminum is generally alloyed with metals such as magnesium, zinc, copper, manganese, silicon, and lithium. Other metals such as titanium, chromium, lead, nickel and bismuth are also added in small quantities.

The tensile strength of pure aluminum is low, after the addition of other metals for alloying, the strength of the aluminum increases.

Mechanisms for strengthening aluminum:

The engineering applications commonly for aluminum includes automotive, aerospace, buildings, beer and soda cans. Since, the pure aluminum is soft, the strengthening of aluminum is important to use it for engineering structures.

The strength of aluminum is modified with the help of the cold working, heat treating and alloying. Generally, the strength of alloys can be increased by cold working but some of the alloys required additional strength and undergoes solid solution strengthening, precipitation strengthening, and dispersion strengthening.

Cold working: This reduces the material thickness. The sheets and plates of different thickness are made with the help of cold rolling. Generally, the strength of all the aluminum alloy can be increased by cold working.

Solid solution strengthening: The strength of metal increases when any alloying element is added to the aluminum. The mixture so formed is called a solid solution as the aluminum is mixed with the alloying atoms. The strengthening extent depends on the type and percentage of alloying elements added to the aluminum.

Precipitation strengthening: The particles with size less than 0.001 mm are formed inside the metal in this process. The particles are known as precipitates and contain the aluminum compounds with alloying elements or alloying elements compounds. This is due to the series of heat treatment. When the precipitate is formed, the step is known as aging.

Dispersion strengthening: In the aluminum casting process, when alloy of manganese reacts with aluminum and silicon and iron, the dispersoid particles are formed. The diameter of these particles is less than 0.001 mm. The grain structure is influenced by the dispersoid particles which is formed during the heat treatment. This results in the increase strength of alloy as compared to the one formed without dispersoids.

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Answer 2

Question

Chapter 1, Problem 1CO

Interpretation Introduction

Interpretation: The mechanism by which chemistry and engineering helped transform aluminum from a precious metal into an inexpensive structural material should be explained.

Concept Introduction:

Aluminum is known to be the world’s most abundant metal. It is the third most common element and present as the 8% of the earth’s crust. It is derived from the mineral bauxite.

Pure form of aluminum is soft, corrosion resistant, ductile and has a high electrical conductivity. It is used as foil and conductor cables by alloying with other metals in order to give strength to it. It is known to be the lightest engineering metal with strength to weight ratio. More than the steel, this makes aluminum an important structural material. Opposite to steel, the strength of aluminum increases on decreasing temperature. Thus, aluminum works well in the cold atmosphere. For pure aluminum, the tensile strength is 90 MPa which is increased to 680 MPa for the aluminum alloys treated with heat.

Expert Solution & Answer

Explanation of Solution

The increase in application of the aluminum is due to its properties such as strength, recyclability, lightness, formability and resistance to corrosion. The types of product ranges from the packaging foils to the structural materials.

Aluminum is generally alloyed with metals such as magnesium, zinc, copper, manganese, silicon, and lithium. Other metals such as titanium, chromium, lead, nickel and bismuth are also added in small quantities.

The tensile strength of pure aluminum is low, after the addition of other metals for alloying, the strength of the aluminum increases.

Mechanisms for strengthening aluminum:

The engineering applications commonly for aluminum includes automotive, aerospace, buildings, beer and soda cans. Since, the pure aluminum is soft, the strengthening of aluminum is important to use it for engineering structures.

The strength of aluminum is modified with the help of the cold working, heat treating and alloying. Generally, the strength of alloys can be increased by cold working but some of the alloys required additional strength and undergoes solid solution strengthening, precipitation strengthening, and dispersion strengthening.

Cold working: This reduces the material thickness. The sheets and plates of different thickness are made with the help of cold rolling. Generally, the strength of all the aluminum alloy can be increased by cold working.

Solid solution strengthening: The strength of metal increases when any alloying element is added to the aluminum. The mixture so formed is called a solid solution as the aluminum is mixed with the alloying atoms. The strengthening extent depends on the type and percentage of alloying elements added to the aluminum.

Precipitation strengthening: The particles with size less than 0.001 mm are formed inside the metal in this process. The particles are known as precipitates and contain the aluminum compounds with alloying elements or alloying elements compounds. This is due to the series of heat treatment. When the precipitate is formed, the step is known as aging.

Dispersion strengthening: In the aluminum casting process, when alloy of manganese reacts with aluminum and silicon and iron, the dispersoid particles are formed. The diameter of these particles is less than 0.001 mm. The grain structure is influenced by the dispersoid particles which is formed during the heat treatment. This results in the increase strength of alloy as compared to the one formed without dispersoids.

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Answer 3

Question

Chapter 1, Problem 1CO

Interpretation Introduction

Interpretation: The mechanism by which chemistry and engineering helped transform aluminum from a precious metal into an inexpensive structural material should be explained.

Concept Introduction:

Aluminum is known to be the world’s most abundant metal. It is the third most common element and present as the 8% of the earth’s crust. It is derived from the mineral bauxite.

Pure form of aluminum is soft, corrosion resistant, ductile and has a high electrical conductivity. It is used as foil and conductor cables by alloying with other metals in order to give strength to it. It is known to be the lightest engineering metal with strength to weight ratio. More than the steel, this makes aluminum an important structural material. Opposite to steel, the strength of aluminum increases on decreasing temperature. Thus, aluminum works well in the cold atmosphere. For pure aluminum, the tensile strength is 90 MPa which is increased to 680 MPa for the aluminum alloys treated with heat.

Expert Solution & Answer

Explanation of Solution

The increase in application of the aluminum is due to its properties such as strength, recyclability, lightness, formability and resistance to corrosion. The types of product ranges from the packaging foils to the structural materials.

Aluminum is generally alloyed with metals such as magnesium, zinc, copper, manganese, silicon, and lithium. Other metals such as titanium, chromium, lead, nickel and bismuth are also added in small quantities.

The tensile strength of pure aluminum is low, after the addition of other metals for alloying, the strength of the aluminum increases.

Mechanisms for strengthening aluminum:

The engineering applications commonly for aluminum includes automotive, aerospace, buildings, beer and soda cans. Since, the pure aluminum is soft, the strengthening of aluminum is important to use it for engineering structures.

The strength of aluminum is modified with the help of the cold working, heat treating and alloying. Generally, the strength of alloys can be increased by cold working but some of the alloys required additional strength and undergoes solid solution strengthening, precipitation strengthening, and dispersion strengthening.

Cold working: This reduces the material thickness. The sheets and plates of different thickness are made with the help of cold rolling. Generally, the strength of all the aluminum alloy can be increased by cold working.

Solid solution strengthening: The strength of metal increases when any alloying element is added to the aluminum. The mixture so formed is called a solid solution as the aluminum is mixed with the alloying atoms. The strengthening extent depends on the type and percentage of alloying elements added to the aluminum.

Precipitation strengthening: The particles with size less than 0.001 mm are formed inside the metal in this process. The particles are known as precipitates and contain the aluminum compounds with alloying elements or alloying elements compounds. This is due to the series of heat treatment. When the precipitate is formed, the step is known as aging.

Dispersion strengthening: In the aluminum casting process, when alloy of manganese reacts with aluminum and silicon and iron, the dispersoid particles are formed. The diameter of these particles is less than 0.001 mm. The grain structure is influenced by the dispersoid particles which is formed during the heat treatment. This results in the increase strength of alloy as compared to the one formed without dispersoids.

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Answer 4

Question

Chapter 1, Problem 1CO

Interpretation Introduction

Interpretation: The mechanism by which chemistry and engineering helped transform aluminum from a precious metal into an inexpensive structural material should be explained.

Concept Introduction:

Aluminum is known to be the world’s most abundant metal. It is the third most common element and present as the 8% of the earth’s crust. It is derived from the mineral bauxite.

Pure form of aluminum is soft, corrosion resistant, ductile and has a high electrical conductivity. It is used as foil and conductor cables by alloying with other metals in order to give strength to it. It is known to be the lightest engineering metal with strength to weight ratio. More than the steel, this makes aluminum an important structural material. Opposite to steel, the strength of aluminum increases on decreasing temperature. Thus, aluminum works well in the cold atmosphere. For pure aluminum, the tensile strength is 90 MPa which is increased to 680 MPa for the aluminum alloys treated with heat.

Expert Solution & Answer

Explanation of Solution

The increase in application of the aluminum is due to its properties such as strength, recyclability, lightness, formability and resistance to corrosion. The types of product ranges from the packaging foils to the structural materials.

Aluminum is generally alloyed with metals such as magnesium, zinc, copper, manganese, silicon, and lithium. Other metals such as titanium, chromium, lead, nickel and bismuth are also added in small quantities.

The tensile strength of pure aluminum is low, after the addition of other metals for alloying, the strength of the aluminum increases.

Mechanisms for strengthening aluminum:

The engineering applications commonly for aluminum includes automotive, aerospace, buildings, beer and soda cans. Since, the pure aluminum is soft, the strengthening of aluminum is important to use it for engineering structures.

The strength of aluminum is modified with the help of the cold working, heat treating and alloying. Generally, the strength of alloys can be increased by cold working but some of the alloys required additional strength and undergoes solid solution strengthening, precipitation strengthening, and dispersion strengthening.

Cold working: This reduces the material thickness. The sheets and plates of different thickness are made with the help of cold rolling. Generally, the strength of all the aluminum alloy can be increased by cold working.

Solid solution strengthening: The strength of metal increases when any alloying element is added to the aluminum. The mixture so formed is called a solid solution as the aluminum is mixed with the alloying atoms. The strengthening extent depends on the type and percentage of alloying elements added to the aluminum.

Precipitation strengthening: The particles with size less than 0.001 mm are formed inside the metal in this process. The particles are known as precipitates and contain the aluminum compounds with alloying elements or alloying elements compounds. This is due to the series of heat treatment. When the precipitate is formed, the step is known as aging.

Dispersion strengthening: In the aluminum casting process, when alloy of manganese reacts with aluminum and silicon and iron, the dispersoid particles are formed. The diameter of these particles is less than 0.001 mm. The grain structure is influenced by the dispersoid particles which is formed during the heat treatment. This results in the increase strength of alloy as compared to the one formed without dispersoids.

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Answer 5

Chapter 1, Problem 1CO

Interpretation Introduction

Interpretation: The mechanism by which chemistry and engineering helped transform aluminum from a precious metal into an inexpensive structural material should be explained.

Concept Introduction:

Aluminum is known to be the world’s most abundant metal. It is the third most common element and present as the 8% of the earth’s crust. It is derived from the mineral bauxite.

Pure form of aluminum is soft, corrosion resistant, ductile and has a high electrical conductivity. It is used as foil and conductor cables by alloying with other metals in order to give strength to it. It is known to be the lightest engineering metal with strength to weight ratio. More than the steel, this makes aluminum an important structural material. Opposite to steel, the strength of aluminum increases on decreasing temperature. Thus, aluminum works well in the cold atmosphere. For pure aluminum, the tensile strength is 90 MPa which is increased to 680 MPa for the aluminum alloys treated with heat.

Expert Solution & Answer

Explanation of Solution

The increase in application of the aluminum is due to its properties such as strength, recyclability, lightness, formability and resistance to corrosion. The types of product ranges from the packaging foils to the structural materials.

Aluminum is generally alloyed with metals such as magnesium, zinc, copper, manganese, silicon, and lithium. Other metals such as titanium, chromium, lead, nickel and bismuth are also added in small quantities.

The tensile strength of pure aluminum is low, after the addition of other metals for alloying, the strength of the aluminum increases.

Mechanisms for strengthening aluminum:

The engineering applications commonly for aluminum includes automotive, aerospace, buildings, beer and soda cans. Since, the pure aluminum is soft, the strengthening of aluminum is important to use it for engineering structures.

The strength of aluminum is modified with the help of the cold working, heat treating and alloying. Generally, the strength of alloys can be increased by cold working but some of the alloys required additional strength and undergoes solid solution strengthening, precipitation strengthening, and dispersion strengthening.

Cold working: This reduces the material thickness. The sheets and plates of different thickness are made with the help of cold rolling. Generally, the strength of all the aluminum alloy can be increased by cold working.

Solid solution strengthening: The strength of metal increases when any alloying element is added to the aluminum. The mixture so formed is called a solid solution as the aluminum is mixed with the alloying atoms. The strengthening extent depends on the type and percentage of alloying elements added to the aluminum.

Precipitation strengthening: The particles with size less than 0.001 mm are formed inside the metal in this process. The particles are known as precipitates and contain the aluminum compounds with alloying elements or alloying elements compounds. This is due to the series of heat treatment. When the precipitate is formed, the step is known as aging.

Dispersion strengthening: In the aluminum casting process, when alloy of manganese reacts with aluminum and silicon and iron, the dispersoid particles are formed. The diameter of these particles is less than 0.001 mm. The grain structure is influenced by the dispersoid particles which is formed during the heat treatment. This results in the increase strength of alloy as compared to the one formed without dispersoids.

Answer 6

Chapter 1, Problem 1CO

Interpretation Introduction

Interpretation: The mechanism by which chemistry and engineering helped transform aluminum from a precious metal into an inexpensive structural material should be explained.

Concept Introduction:

Aluminum is known to be the world’s most abundant metal. It is the third most common element and present as the 8% of the earth’s crust. It is derived from the mineral bauxite.

Pure form of aluminum is soft, corrosion resistant, ductile and has a high electrical conductivity. It is used as foil and conductor cables by alloying with other metals in order to give strength to it. It is known to be the lightest engineering metal with strength to weight ratio. More than the steel, this makes aluminum an important structural material. Opposite to steel, the strength of aluminum increases on decreasing temperature. Thus, aluminum works well in the cold atmosphere. For pure aluminum, the tensile strength is 90 MPa which is increased to 680 MPa for the aluminum alloys treated with heat.

Expert Solution & Answer

Explanation of Solution

The increase in application of the aluminum is due to its properties such as strength, recyclability, lightness, formability and resistance to corrosion. The types of product ranges from the packaging foils to the structural materials.

Aluminum is generally alloyed with metals such as magnesium, zinc, copper, manganese, silicon, and lithium. Other metals such as titanium, chromium, lead, nickel and bismuth are also added in small quantities.

The tensile strength of pure aluminum is low, after the addition of other metals for alloying, the strength of the aluminum increases.

Mechanisms for strengthening aluminum:

The engineering applications commonly for aluminum includes automotive, aerospace, buildings, beer and soda cans. Since, the pure aluminum is soft, the strengthening of aluminum is important to use it for engineering structures.

The strength of aluminum is modified with the help of the cold working, heat treating and alloying. Generally, the strength of alloys can be increased by cold working but some of the alloys required additional strength and undergoes solid solution strengthening, precipitation strengthening, and dispersion strengthening.

Cold working: This reduces the material thickness. The sheets and plates of different thickness are made with the help of cold rolling. Generally, the strength of all the aluminum alloy can be increased by cold working.

Solid solution strengthening: The strength of metal increases when any alloying element is added to the aluminum. The mixture so formed is called a solid solution as the aluminum is mixed with the alloying atoms. The strengthening extent depends on the type and percentage of alloying elements added to the aluminum.

Precipitation strengthening: The particles with size less than 0.001 mm are formed inside the metal in this process. The particles are known as precipitates and contain the aluminum compounds with alloying elements or alloying elements compounds. This is due to the series of heat treatment. When the precipitate is formed, the step is known as aging.

Dispersion strengthening: In the aluminum casting process, when alloy of manganese reacts with aluminum and silicon and iron, the dispersoid particles are formed. The diameter of these particles is less than 0.001 mm. The grain structure is influenced by the dispersoid particles which is formed during the heat treatment. This results in the increase strength of alloy as compared to the one formed without dispersoids.

Answer 7

Chapter 1, Problem 1CO

Interpretation Introduction

Interpretation: The mechanism by which chemistry and engineering helped transform aluminum from a precious metal into an inexpensive structural material should be explained.

Concept Introduction:

Aluminum is known to be the world’s most abundant metal. It is the third most common element and present as the 8% of the earth’s crust. It is derived from the mineral bauxite.

Pure form of aluminum is soft, corrosion resistant, ductile and has a high electrical conductivity. It is used as foil and conductor cables by alloying with other metals in order to give strength to it. It is known to be the lightest engineering metal with strength to weight ratio. More than the steel, this makes aluminum an important structural material. Opposite to steel, the strength of aluminum increases on decreasing temperature. Thus, aluminum works well in the cold atmosphere. For pure aluminum, the tensile strength is 90 MPa which is increased to 680 MPa for the aluminum alloys treated with heat.

Answer 8

Expert Solution & Answer

Explanation of Solution

The increase in application of the aluminum is due to its properties such as strength, recyclability, lightness, formability and resistance to corrosion. The types of product ranges from the packaging foils to the structural materials.

Aluminum is generally alloyed with metals such as magnesium, zinc, copper, manganese, silicon, and lithium. Other metals such as titanium, chromium, lead, nickel and bismuth are also added in small quantities.

The tensile strength of pure aluminum is low, after the addition of other metals for alloying, the strength of the aluminum increases.

Mechanisms for strengthening aluminum:

The engineering applications commonly for aluminum includes automotive, aerospace, buildings, beer and soda cans. Since, the pure aluminum is soft, the strengthening of aluminum is important to use it for engineering structures.

The strength of aluminum is modified with the help of the cold working, heat treating and alloying. Generally, the strength of alloys can be increased by cold working but some of the alloys required additional strength and undergoes solid solution strengthening, precipitation strengthening, and dispersion strengthening.

Cold working: This reduces the material thickness. The sheets and plates of different thickness are made with the help of cold rolling. Generally, the strength of all the aluminum alloy can be increased by cold working.

Solid solution strengthening: The strength of metal increases when any alloying element is added to the aluminum. The mixture so formed is called a solid solution as the aluminum is mixed with the alloying atoms. The strengthening extent depends on the type and percentage of alloying elements added to the aluminum.

Precipitation strengthening: The particles with size less than 0.001 mm are formed inside the metal in this process. The particles are known as precipitates and contain the aluminum compounds with alloying elements or alloying elements compounds. This is due to the series of heat treatment. When the precipitate is formed, the step is known as aging.

Dispersion strengthening: In the aluminum casting process, when alloy of manganese reacts with aluminum and silicon and iron, the dispersoid particles are formed. The diameter of these particles is less than 0.001 mm. The grain structure is influenced by the dispersoid particles which is formed during the heat treatment. This results in the increase strength of alloy as compared to the one formed without dispersoids.

Answer 9

Expert Solution & Answer

Answer 10

Expert Solution & Answer

Answer 11

Ch. 1 - Prob. 1CO Ch. 1 - Prob. 2CO Ch. 1 - Draw pictures to illustrate simple chemical...Ch. 1 - Explain the difference between inductive and...Ch. 1 - Use appropriate techniques to convert measurements...Ch. 1 - Express the results of calculations using the...Ch. 1 - Use the web to determine the mass of a steel...Ch. 1 - Prob. 1.2PAE Ch. 1 - Where does the scientific method start? What is...Ch. 1 - Use the web to determine the amount of aluminum...

Explanation of Solution

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Chapter 1 Solutions