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 29RQ
To determine
To discuss:- The four single phases presents in the iron-carbide diagram with their phase diagram notation and the assigned name.
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Cu-Ni phase diagram is given below.
Answer the questions according to the diagram for 60% Cu- 40% Ni alloy.
4b) Figure 6 shows the Fe-Fe3C phase diagram. Evaluate
(i) the temperature at which austenite first begins to transform on cooling; (ii) the primary microconstituent that forms; (iii) the composition and amount of each phase present at 728°C; (iv) the composition and amount of each phase present at 726°C; (v) Sketch the evolution of the microstructures of hypereutectoid steels with 1.1 wt% of carbon during the cooling in relationship to Fe-Fe3C phase diagram shown at 900°C, 800°C and 500°C, respectively.
1-The microstructural design of Iron-Carbon(Fe-C) alloys has led to the development of vast range of steels for structural material applications. The phase diagram provide means for producing specific microstructures. Using the phase diagram below to answer the following questions
A – If the liquid mixture of Fe-3%Wt C is slowly cooled from 1600 C to 1200C indicate the phase(S) that are present at 1200 C . Also calculate the composition of the of phases.(10)
B-Describe the sequence of all phase transformation that accour from Fe-1.5%wt C is slowly cooled from 1600 C to 400 C. Use the diagram below to to describe the microstructures for each phase transformation (10)
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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- Question : Make an initial estimation of the composition of your Sn-Bi alloy based on your cooling curve data. You should turn in a graph of the cooling curve data with any critical temperature(s) associated with phase transformations indicated. Based on these temperatures, provide an estimate of the possible alloy compositions of your specimen. In addition to a quantitative result, illustrate with vertical line(s) and/or shaded region(s) on the Sn-Bi phase diagram. Additional Information : I have provided the grpah of the cooling curve. Please just mar where the critical temp would be on the graph. I also provided wit the phase diagram needed. Please follow the above intructions and give me the solutionarrow_forwardA hypo-eutectoid steel with composition of 0.5% carbon is heated to 1000°. Using the a iron-carbon phase diagram (also found in the course book, or here https://commons.wikimedia.org/wiki/File:Iron_carbon_phase_diagram.svg (Links to an external site.) (Links to an external site.)) answer the following questions. (a) What phase or phases will be present at 950°C? (b) If temperature is lowered from 950°C, at which temperature (estimate) α phase (Ferrite) will appear? (c) Use the lever rule to estimate how much (wt%) ferrite and how much austenite will exist just above 727 °C? (d) What happens to the austenite if the temperature is lowered below 727 °C? (e) Schematically sketch and label the resulting microstructure.arrow_forwardIn the binary phase diagram for the Cu-Ni system in the Figure provided: 1. Draw the microstructures for each point for the alloy upon cooling (A-E) and label ALL phases! 2. What are the compositions (C's) of EVERY phase and the relative phase amounts (W's) for each microstructure A-E? Show all work! TOCL (liquid) 20 (a, solid) 30 A BCD E E 40 OOOOO 50 wt% Ni www CL= Ca= CL= Ca= CL= Ca= CL= Cu= C₁= Ca= W₁= Wa= WL= WQ= W₁= Wa= W₁= Wa= W₁= Wa= A B C D Earrow_forward
- Draw an iron iron-carbide diagram. Show the percentage of carbon in each phase.arrow_forwardPlot the Iron-Iron Carbide phase diagram label all phases and temperatures, = answer the following: a-Show the heating ranges for main heat treatments Label and than b-What are the upper and lower critical temperatures for 0.8 %C steel c-For alloy containing 3% C find the mass fraction of phases and composition in 1000°C,and 700 °C.arrow_forwardThe following questions are based on a high carbon steel with a composition of 1,5% C and 98,5% Fe. Please refer to the Fe-Fe3C binary phase diagram in Callister and Rethwhich 1) a Name the phases present and calculate the amounts of these phases just above the eutectoid temperature b, Give the amount of austenite present at 1100°C. c. Give the amount of pro-eutectoid ferrite just above the eutectoid temperature. d. With equilibrium cooling just below the eutectoid temperature calculate the total ferrite. e. Why must the samples be quenched rapidly to obtain high hardness?arrow_forward
- For 40 wt% Sn – 60 wt% Pb alloy at 150 oC (at point B) as shown in Figure, i. State the name of phase(s) present. ii. Calculate the composition(s) of the phase(s) present. 600 300 Liquid 500 a+L 200 400 300 100 200 100 20 60 100 (Pb) (Sn) Composition (wt % Sn) Temperature ("C) Temperature ("F)arrow_forwardanswer the following: 3) Plot the Iron-Iron Carbide phase diagram label all phases and temperatures, and a-Show the heating ranges for main heat treatments b-What are the upper and lower critical temperatures for 0.8 %C steel c-For alloy containing 3% C find the mass fraction of phases and composition in 1000°C,and 700 °C.arrow_forwardUse the copper silver phase diagram below. 100g of a 40 wt% Cu 60 wt% Ag alloy is made and cooled from liquid form. a. At what temperature does the solid phase start to appear? b. What phases exist at 780°C? c. What are the compositions (Cu and Ag%) of the phases in question b? d. What are the weights (in g) of Cu in the solid phase and liquid phase in question b?arrow_forward
- 4arrow_forwardMy answer was graded as wrong. Can someone please solve this correctly to help me study for a testarrow_forwardCopper-rich copper-beryllium alloys are precipitation hardenable. After consulting the portion of the phase diagram shown in Figure below, do the following: Composition (at% Be) 10 15 20 Liquid 1000 866°C 800 -620°C 600 a+ 400 2 3. (Cu) Composition (wt% Bo) (1) Indicate the range of compositions over which these alloys be precipitation hardened. (ii) Describe the heat-treatment procedures (in terms of temperatures) that would be used to precipitation harden an alloy having a composition of your choosing but lying within the range given for part (i). Temperature ("Oarrow_forward
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