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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Chapter 4, Problem 39RQ
To determine
Two possible high carbon phases in the cast iron and features tends to formation of each phase.
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Chapter 4 Solutions
Degarmo's Materials And Processes In Manufacturing
Ch. 4 - What kind of questions can be answered by...Ch. 4 - Prob. 2RQCh. 4 - Supplement the examples provided in the text with...Ch. 4 - Prob. 4RQCh. 4 - What three primary variables are generally...Ch. 4 - Use the pressure–temperature diagram for water...Ch. 4 - Prob. 7RQCh. 4 - What form of equilibrium phase diagram is most...Ch. 4 - What is a cooling curve?Ch. 4 - Prob. 10RQ
Ch. 4 - Prob. 11RQCh. 4 - Prob. 12RQCh. 4 - Prob. 13RQCh. 4 - What types of changes occur upon cooling through a...Ch. 4 - Prob. 15RQCh. 4 - What is a tie�line? For what types of phase...Ch. 4 - What points on a tie�line are used to determine...Ch. 4 - Prob. 18RQCh. 4 - What is a cored structure? Under what conditions...Ch. 4 - What is the difference between a cored structure...Ch. 4 - Prob. 21RQCh. 4 - Prob. 22RQCh. 4 - Prob. 23RQCh. 4 - Prob. 24RQCh. 4 - For the various three�phase reactions, what does...Ch. 4 - Prob. 26RQCh. 4 - Prob. 27RQCh. 4 - Prob. 28RQCh. 4 - Prob. 29RQCh. 4 - Prob. 30RQCh. 4 - Prob. 31RQCh. 4 - Prob. 32RQCh. 4 - Prob. 33RQCh. 4 - Prob. 34RQCh. 4 - Prob. 35RQCh. 4 - Prob. 36RQCh. 4 - Prob. 37RQCh. 4 - What is carbon equivalent, and how is it computed?Ch. 4 - Prob. 39RQCh. 4 - Prob. 40RQCh. 4 - Prob. 1PCh. 4 - Prob. 2PCh. 4 - Prob. 3PCh. 4 - Consider the manufacture of a fishhook beginning...Ch. 4 - If a stainless steel were to be used, what type of...Ch. 4 - A wide spectrum of coatings and surface treatments...Ch. 4 - Prob. 1.4CSCh. 4 - Prob. 2.1CSCh. 4 - Prob. 2.2CSCh. 4 - Prob. 2.3CSCh. 4 - Prob. 2.4CS
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- Part C. Which type of phase transformation is important in heat treatment of steels? (circle one)Peritectic Eutectic Eutectoid Incongruent meltingAt what temperature and overall composition wt% C, does it occur?Write the reaction equation for this transformation, and briefly describe the nature of each of the three important phases that are involved.arrow_forward1) Name the mean reactions in Iron-carbon phase diagram with a general equation for each one. 2) What are the main quenching variables that govern cooling behavior and heat transfer (list only)? 3) Give the disadvantages of retained austenite.arrow_forward9.43 For a 76 wt% Pb-24 wt% Mg alloy, make sche- ● matic sketches of the microstructure that would be observed for conditions of very slow cooling at the following temperatures: 575°C (1070°F), 500°C (930°F), 450°C (840°F), and 300°C (570°F). Label all phases and indicate their approximate compositions.arrow_forward
- Use the Lead-Tin (Pb-Sn) phase diagram below to answer the following questions: Place the following microstructures in the correct order of formation for slowly cooling a 98 wt% Sn alloy from 300 °C to room temperature (point A to point B).arrow_forwardWhat is the microstructure that will be formed after heat treatment of steel containing 1.4 carbon ratio with normalization and air cooling? support with phase diagram and TTT diagrams.arrow_forwardWhy are the most precipitation-hardened alloys suitable only for low-temperature applications?arrow_forward
- in a tabular format compare composition and heat treatment for different cast irons and steelsarrow_forwardPlot the Iron-Iron Carbide phase diagram (Eutectoid Portion) and answer the following: a) Show the heating ranges for tempering heat treatments b) Detect the upper and lower critical temperatures for 0.3%C steel. c) Calculate the phases amounts and compositions of 0.3% C at A2 , A1,and 300°C.arrow_forwardDraw the iron carbon phase diagram and labeling all lines and areas. Then:- 1- find the melting point of cast iron with 2.2%C. 2- explain in detail the steps of solidification and transformation of cast iron with 3%C. 3- draw the expected microstructure of iron with 0.1%C ; 0.4%C; 0.83%C; 2%C; 4.3%C. 4-draw the cooling curve for hyper steel with 1.8%C. 5- find the percentage of liquid and solid for cast iron with 3.8%C at 1160 degree Celsius with the composition for each of them.arrow_forward
- (11.10) Suppose that a steel of eutectoid composi- tion is cooled to 550°C (1020°F) from 760°C(1400°F) in less than 0.5 s and held at this temperature. (a) How long will it take for the austenite- to pearlite reaction to go to 50% comple- ton? To 100% completion? (b) Estimate the hardness of the alloy that has completely transformed to pearlite? 11.12) Briefly cite the differences between pearl- rp. bainite, and spheroidite relative to crostructure and mechanical properties?arrow_forward1. What distinguishing features do eutectoid and martensitic transformations in steel have? Compare and contrast them in brief.arrow_forwardWhat are they and what is their application in the production of the following steels: TTT diagrams. Phases present out of equilibrium.i. Martensiteii. Bainitearrow_forward
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