The hardness of eutectoid steel heated to 800 ° C, quenched to 300 ° C and held for 10 sec and again reheated to 400 ° C needs to be determined. Concept Introduction: Material hardness is a property of a metal due to which material resist the plastic deformation. Plastic deformation means material deformation which undergoes non-reversible change. Hardness is the property of any material which posse's stiffness, resistance to bending, scratching or cutting. Hardness is not constant or fixed for all material, but it depends upon strength and plasticity of metal, maximal hardness is expressed in terms of hardness number.

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Answer 1

Question

Chapter 12, Problem 12.91P

Interpretation Introduction

Interpretation:

The hardness of eutectoid steel heated to 800°C, quenched to 300°C and held for 10 sec and again reheated to 400°C needs to be determined.

Concept Introduction:

Material hardness is a property of a metal due to which material resist the plastic deformation. Plastic deformation means material deformation which undergoes non-reversible change. Hardness is the property of any material which posse's stiffness, resistance to bending, scratching or cutting. Hardness is not constant or fixed for all material, but it depends upon strength and plasticity of metal, maximal hardness is expressed in terms of hardness number.

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Answer 2

Question

Chapter 12, Problem 12.91P

Interpretation Introduction

Interpretation:

The hardness of eutectoid steel heated to 800°C, quenched to 300°C and held for 10 sec and again reheated to 400°C needs to be determined.

Concept Introduction:

Material hardness is a property of a metal due to which material resist the plastic deformation. Plastic deformation means material deformation which undergoes non-reversible change. Hardness is the property of any material which posse's stiffness, resistance to bending, scratching or cutting. Hardness is not constant or fixed for all material, but it depends upon strength and plasticity of metal, maximal hardness is expressed in terms of hardness number.

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Answer 3

Question

Chapter 12, Problem 12.91P

Interpretation Introduction

Interpretation:

The hardness of eutectoid steel heated to 800°C, quenched to 300°C and held for 10 sec and again reheated to 400°C needs to be determined.

Concept Introduction:

Material hardness is a property of a metal due to which material resist the plastic deformation. Plastic deformation means material deformation which undergoes non-reversible change. Hardness is the property of any material which posse's stiffness, resistance to bending, scratching or cutting. Hardness is not constant or fixed for all material, but it depends upon strength and plasticity of metal, maximal hardness is expressed in terms of hardness number.

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Answer 4

Question

Chapter 12, Problem 12.91P

Interpretation Introduction

Interpretation:

The hardness of eutectoid steel heated to 800°C, quenched to 300°C and held for 10 sec and again reheated to 400°C needs to be determined.

Concept Introduction:

Material hardness is a property of a metal due to which material resist the plastic deformation. Plastic deformation means material deformation which undergoes non-reversible change. Hardness is the property of any material which posse's stiffness, resistance to bending, scratching or cutting. Hardness is not constant or fixed for all material, but it depends upon strength and plasticity of metal, maximal hardness is expressed in terms of hardness number.

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Answer 5

Chapter 12, Problem 12.91P

Interpretation Introduction

Interpretation:

The hardness of eutectoid steel heated to 800°C, quenched to 300°C and held for 10 sec and again reheated to 400°C needs to be determined.

Concept Introduction:

Material hardness is a property of a metal due to which material resist the plastic deformation. Plastic deformation means material deformation which undergoes non-reversible change. Hardness is the property of any material which posse's stiffness, resistance to bending, scratching or cutting. Hardness is not constant or fixed for all material, but it depends upon strength and plasticity of metal, maximal hardness is expressed in terms of hardness number.

Answer 6

Chapter 12, Problem 12.91P

Interpretation Introduction

Interpretation:

The hardness of eutectoid steel heated to 800°C, quenched to 300°C and held for 10 sec and again reheated to 400°C needs to be determined.

Concept Introduction:

Material hardness is a property of a metal due to which material resist the plastic deformation. Plastic deformation means material deformation which undergoes non-reversible change. Hardness is the property of any material which posse's stiffness, resistance to bending, scratching or cutting. Hardness is not constant or fixed for all material, but it depends upon strength and plasticity of metal, maximal hardness is expressed in terms of hardness number.

Answer 7

Chapter 12, Problem 12.91P

Interpretation Introduction

Interpretation:

The hardness of eutectoid steel heated to 800°C, quenched to 300°C and held for 10 sec and again reheated to 400°C needs to be determined.

Concept Introduction:

Material hardness is a property of a metal due to which material resist the plastic deformation. Plastic deformation means material deformation which undergoes non-reversible change. Hardness is the property of any material which posse's stiffness, resistance to bending, scratching or cutting. Hardness is not constant or fixed for all material, but it depends upon strength and plasticity of metal, maximal hardness is expressed in terms of hardness number.

Answer 8

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Answer 9

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Answer 10

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Answer 11

Ch. 12 - Prob. 12.1P Ch. 12 - Prob. 12.2P Ch. 12 - Prob. 12.3P Ch. 12 - Prob. 12.4P Ch. 12 - Prob. 12.5P Ch. 12 - Prob. 12.6P Ch. 12 - Prob. 12.7P Ch. 12 - Prob. 12.8P Ch. 12 - Prob. 12.9P Ch. 12 - Prob. 12.10P

Solution Summary: The author explains that the hardness of eutectoid steel needs to be determined. It is not constant or fixed for all material, but it depends upon strength and plasticity of metal.

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Chapter 12 Solutions