Degarmo's Materials And Processes In Manufacturing
13th Edition
ISBN: 9781119492825
Author: Black, J. Temple, Kohser, Ronald A., Author.
Publisher: Wiley,
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Textbook Question
Chapter 5, Problem 36RQ
What is retained austenite, and why is it an undesirable structure in heat�treated steels?
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What is the composition (wt% C) of a steel with AISI designation 1090? .Would this be considered a low, medium, or high carbon steel? (circle one)
(c) The steels with the following compositions are heat treated and the results of
microstructures are indicated in Table 2(c).
Table 2(c): Heat treated steels and the results of microstructures
Steel A
0.35 wt% C
Coarse Pearlite
Steel B
0.25 wt% C
Coarse Pearlite
Steel C
0.35 wt% C
Fine Pearlite
Rank the above steels based on carbon content and microstructures from the highest
to the lowest hardness with justification.
1. Annealing is carried out to relieve stresses
II. Annealing is carried out to increase softness
III. Annealing is carried out to produce a specific microstructure
IV. Annealing is always utilized in low carbon steels
Which statement(s) is/are true given above about annealing processes?
Chapter 5 Solutions
Degarmo's Materials And Processes In Manufacturing
Ch. 5 - What is heat treatment?Ch. 5 - What types of properties can be altered through...Ch. 5 - Why should people performing hot forming or...Ch. 5 - What is the broad goal of the processing heat...Ch. 5 - Why might equilibrium phase diagrams be useful...Ch. 5 - What are the A1, A3, and Acm lines?Ch. 5 - What are some possible objectives of annealing...Ch. 5 - Why might it be important to include a preceding...Ch. 5 - Describe the cooling conditions of a full anneal.Ch. 5 - Why are the hypereutectoid steels not...
Ch. 5 - Although full anneals often produce the softest...Ch. 5 - What is the major process difference between full...Ch. 5 - Although normalizing is less expensive than a full...Ch. 5 - Prob. 14RQCh. 5 - What types of steel would be candidates for a...Ch. 5 - How might steel composition influence the...Ch. 5 - Other than increasing strength, for what three...Ch. 5 - What are the six major mechanisms that can be used...Ch. 5 - Prob. 19RQCh. 5 - What is required for a metal to be a candidate for...Ch. 5 - What are the three steps in an age�hardening...Ch. 5 - What is the difference between a coherent...Ch. 5 - What is overaging? Why does strength decrease?Ch. 5 - Describe the various aging responses (maximum...Ch. 5 - What is the difference between natural and...Ch. 5 - Why might naturally aging aluminum rivets be...Ch. 5 - Why is it important not to expose precipitation...Ch. 5 - Why is it more difficult to understand the...Ch. 5 - What types of heating and cooling conditions are...Ch. 5 - What are the stable equilibrium phases for steels...Ch. 5 - What are some nonequilibrium structures that...Ch. 5 - Prob. 32RQCh. 5 - What is the major factor that influences the...Ch. 5 - For a given steel, describe the relative strengths...Ch. 5 - Most structure changes proceed to completion over...Ch. 5 - What is retained austenite, and why is it an...Ch. 5 - What types of steels are more prone to retained...Ch. 5 - Why are martensitic structures usually tempered...Ch. 5 - Why does tempering offer a spectrum of possible...Ch. 5 - In what ways is the quench�and�temper heat...Ch. 5 - What is a C�C�T diagram? Why is it more useful...Ch. 5 - What is the critical cooling rate, and how is it...Ch. 5 - What two features combine to determine the...Ch. 5 - What conditions are used to standardize the quench...Ch. 5 - How do the various locations of a Jominy test...Ch. 5 - How do the data collected from a Jominy test...Ch. 5 - What is the assumption that allows the data from a...Ch. 5 - What is hardenability? How is it different from...Ch. 5 - What capabilities are provided by...Ch. 5 - When selecting a steel for an application, what...Ch. 5 - What are the three stages of liquid quenching?Ch. 5 - What are some of the major advantages and...Ch. 5 - Why does brine provide faster cooling than water?Ch. 5 - Why is an oil quench less likely to produce quench...Ch. 5 - What are some of the attractive qualities of a...Ch. 5 - Prob. 56RQCh. 5 - Prob. 57RQCh. 5 - Prob. 58RQCh. 5 - Prob. 59RQCh. 5 - How might the thermally induced residual stresses...Ch. 5 - Prob. 61RQCh. 5 - Prob. 62RQCh. 5 - Prob. 63RQCh. 5 - What is thermomechanical processing?Ch. 5 - Prob. 65RQCh. 5 - Prob. 66RQCh. 5 - Prob. 67RQCh. 5 - Prob. 68RQCh. 5 - Prob. 69RQCh. 5 - Prob. 70RQCh. 5 - Prob. 71RQCh. 5 - Prob. 72RQCh. 5 - Prob. 73RQCh. 5 - Why does a carburized part have to be further...Ch. 5 - Prob. 75RQCh. 5 - Prob. 76RQCh. 5 - Prob. 77RQCh. 5 - Describe the distinguishing features of a box...Ch. 5 - What are some possible functions of artificial...Ch. 5 - Prob. 80RQCh. 5 - Prob. 81RQCh. 5 - Prob. 82RQCh. 5 - What are some current goals of the heat treatment...Ch. 5 - Prob. 1PCh. 5 - Prob. 2PCh. 5 - Prob. 3PCh. 5 - Prob. 4PCh. 5 - Prob. 5PCh. 5 - Prob. 6PCh. 5 - What problems might be expected if the material on...Ch. 5 - Describe some heat treatment processes or...Ch. 5 - Prob. 1.3CSCh. 5 - Prob. 1.4CSCh. 5 - Prob. 1.5CSCh. 5 - Prob. 1.6CSCh. 5 - Prob. 1.7CSCh. 5 - Prob. 1.8CSCh. 5 - Prob. 2.1CSCh. 5 - Prob. 2.2CSCh. 5 - How would you alter the procedures or policies of...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- How do ferrite and cementite work together to form a strong ductile steel?arrow_forwardI need answer within 20 minutes please please with my best wishesarrow_forwardWrite down the percentage of C and other alloying elements of the steel given the short designations 10CrMo910 and 45CrVMoW58arrow_forward
- Large transport aircraft make wide use of Al alloys with a –T6 temper (which indicates the peak strength condition). However, for certain locations in these aircraft it is preferred to use Al alloys with a –T7 temper (which indicates an overaged condition). What could possibly motivate this design decision even though it probably means an undesirable increase in vehicle weight?arrow_forwardWhat is the annealing process to obtain a ferritic-spherical carbide (cementite) internal structure in super-eutectoid steels? how and why is it applied?arrow_forwardCalculate the percentage of C and other alloying elements of the steel given the short designations 10CrMo910 and 45CrVMoW58arrow_forward
- I. Martensitic stainless steels are capable of being heat treated II. Austenitic Stainless Steels are the most corrosion resistant because of the high chromium contents III. Ferritic Stainless Steels are hardened and strengthened by cold work Which statement(s) is/are true given above about stainless steels?arrow_forwardOf the following alloys, pick the one(s) thatmay be strengthened by heat treatment,cold work, or both: R50250 titanium, AZ31Bmagnesium, 6061 aluminum, C51000 phos-phor bronze, lead, 6150 steel, 304 stainlesssteel, and C17200 beryllium copper.arrow_forwardWhat does the process of temper drying do for hardened carbon steel?arrow_forward
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