What are possible sources of error in trying to obtain a specific hardness or strength? Not errors of hardness testing. Talking about working the metal (tempering, normalizing, quenching, etc.) to try to achieve specific hardness or strength.

Q: You are given three metal test samples, with the same chemical composition and differing grain…

A: Given data  grain dia of sample A = 5 micron = 0.005 mm grain dia of sample B = 10 micron = 0.01 mm…

Q: A shear pin made from a 4340 steel (0.4% C) fails by ductile fracture. It was supposed to be…

A: Given: Let us consider the given statements, a) Insufficiently heating the steel would result in…

Q: We could do strain hardening even if the material starts to have necking. True or false?

A:

Q: An engineer is making determinations on the best alloy of steel to use in cables for a cable-stayed…

A:

Q: 2.  Which property of this steel is significant to the failure analysis? The steel can Options:…

A: Option c is correct.

Q: Did the ductile materials (annealed and aluminium) react differently to the two different testing…

A: It is asked to write the behaviour of ductile and brittle materials under tension as well as…

Q: Consider the graph below for 3 metals which have been cold-worked. From the graphs, which of the…

A:

Q: ... Question 1 You are working on a design team at a small orthopaedic firm. You have been asked to…

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Q: heat -treatment: a-Draw on the same graph paper the (Hardness- Distance from quenched end) curve for…

A: Vicker's Hardness Test: The Vickers hardness test is a test performed to quantify the hardness of…

Q: O The following engineering stress-strain data were obtained for a 0.2% C plain-carbon steel. (i)…

A: The stress – strain diagram for the given data is to be drawn . The diagram is drawn using MS Excel.…

Q: A certain tool steel consists of the following chemical composition (typical analysis in %): Element…

A: 1.1: Most important properties of Tool Steel: (i) Wear Resistant: Tool material must be highly wear…

Q: Which of the following statements are true for metals undergoing heat treating and cold working…

A: for metals undergoing heat treating and cold working processes

Q: 2a: How a material can be mechanically strengthened by designing the grain size after…

A: Hello. Since your question has multiple sub-parts, we will solve the first three sub-parts for you.…

Q: Explain the term Heat Treatment. How does heat treatment alter the mechanical properties of steel?…

A: Part A) Heat treatment, It is the method of altering the physical and chemical properties of metal…

Q: The information from Young’'s Modulus A. Stress B. Strain C. Compression D. Stiffness What is…

A: Young's modulus is a property of  material which cannot be changed. According to Hook's law, Stress…

Q: In normalizing heat treatment process, the treated metal obtains

A: Solution:

Q: As a materials engineer in a metal-processing company, you are given a section of metal to heat…

A: A section of metal which is heat treated after cold worked.To find- properties of metal after heat…

Q: Using the isothermal transformation diagram for an iron-carbon alloy of eutectoid composition,…

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Q: You are given three metal test samples, with the same chemical composition and differing grain…

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Q: The figure shows two work pieces of steel of 0.15 %C and 1.2 %C with different dimensions. Compare…

A: It is given that The alloy with 0.15% carbon corresponds to mild   The alloy with 1.2% carbon is…

Q: Answer the following questions based on the given information in the table and further calculation…

A: Given   Material A     Yield strength = 105 MPa                  Strain = 0.45   Material B…

Q: HOME WORK 1 The figure shows two work pieces of steel of 0.3 %C and 1.3 %C with different…

A: If the annealing process is carried out at controlled heating and cooling rates, Size will not…

Q: Austentitic stainless steel's are not hardenable by cold working however Austentic stainless steel's…

A: Given :-  Austentitic stainless steel's are not hardenable by cold working however Austentic…

Q: Question: In stress-strain curve which type of materials exhibits yield strength

A: Yield strength is the point in the stress-strain curve where the metal under load stops elastic…

Q: During the recovery of a cold-worked material, which of the following statement(s) is (are) true?…

A: the answer in second step

Q: Determine whether the first part of statement will INCREASE, DECREASE or HAVE NO EFFECT in the…

A: 1. If there is an increase in application of stress then the presence of dislocation will INCREASE…

Q: Consider the graph below for 3 metals which have been cold-worked. From the graphs, which of the…

A: Given three materials  stress vs strain diagram and we have to compare their properties

Q: Metal working Fe-C: What are possible sources of error in trying to obtain a specific hardness or…

A: To Define : The possible source of error in trying to obtain a specific hardness or strenght.

Q: (b) A cylindrical rod made from an unknown metal is 350mm long and has a diameter of 10mm. The rod…

A: Soln :- it has given - Length of the rod (l) = 350 Diameter (d) = 10 mm ==> cross section area A=…

Q: Consider the graph below for 3 metals which have been cold-worked. From the graphs, which of the…

A: Given

Strengthening of Alloys

Strengthening of the alloys is required as metals become weak due to various lattice defects, metal bonding phenomena. The strength of the metals is not enough for any mechanical work. The internal dislocations of any metals arise due to forming processes. Due to the movement of these dislocations, the metals are plastically deformed.