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 15RQ
To determine
Three information that can be obtained at any point in phase diagram.
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Q1 / Two metals Beryllium (Be) and Silicon (Si) have melting points 1282°C and 1414 °C
respectively, are completely soluble as liquids but completely insoluble as solids . They form a
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Determine the following:-
1- Draw the thermal equilibrium phase diagram and identify all phases are present in
diagram ,then sketches what happens in microstructure when the alloys containing , a-
10wt% Si, b-70wt%Si , solidify completely.
2- Determine the composition and the amount of each phase for the alloy which contain 15
wt% Si-85wt% Be at 1150°C If the alloy is hypoeutectic
determine the amount of eutectic at 600 °C?
or hypereutectic and
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3- The limited solid solubility Binary phase diagram has many types of reactions like
and.......
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"wt%
0.022 W+%
of BCC is
At 727 oC
*******
6-steel alloys classified according to carbon conctration into.....n) and (hough).
which are
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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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- What is a peritectic phase diagram? Draw a typical equilibrium diagram for a eutectic type of system with limited solid solubility and explain its important features.arrow_forwardWhat are the steps in determining phase compositions and phase amounts?arrow_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
- 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_forwardHow can we Interpret a Phase Diagram?arrow_forward
- Using the isothermal transformation diagram given in Figure 2 for a specific material composition to answer the following (this is NOT an Fe-C steel!). NOTE: Assume that you begin with a single-phase sample of α at 790 C.a. What temperature on the diagram corresponds to the α-to-γ phase transformation temperature that would be found on an equilibrium phase diagram? Explain your answer. b. What temperature would provide the most rapid, isothermal phase transformation of α to γ? What would be the minimum time from onset of the phase transformation to its completion? c. On Figure 2, draw and label a cooling schedule (from 790 C) that will produce a single-phase α material at 100 C. How does the thickness of the piece of material influence your ability to create a single-phase α structure? d. Why does the time to initiate phase transformation become smaller as the temperature is reduced within the temperature range above the “nose” of the TTT diagram? Be specific, what process is…arrow_forward1-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)arrow_forwardBI (a) Figure BI below shows the equilibrium phase diagram of hypothetical A - B alloy system. Answer the following questions. (iv) Now assume a melt of Alloy B has a weight of 100 g at a temperature of 652 °C. Maintain the temperature, suggest how to make this melt become a completely solid phase (v) Based on Figure B1, briefly illustrate how to design and achieve a precipitation hardening for A-B alloy. Temperature (°C) 8 700 600 500 400 800 OA 760 °C Line B a/9.5 20 Line A a + L 650 °C 40 Liquid (L) wt%B Figure B1 52.5 a + B 60 B+L 80 93.7 B 100 Barrow_forward
- (b) Explain with the aid of neatly drawn binary phase diagrams the following terms? i. Isormophous phase diagram ii. Eutectic Isotherm iii. Peritectic pointarrow_forwardDraw two different types of temperature-composition phase diagrams for an exemplary liquid-solid system, show the important regions and explain the leverage rule on the diagram by deriving the relevant relations.arrow_forwardPhase Diagrams Question-1 (a) What is a binary isomorphous alloy system? (b) What are the four Hume-Rothery rules for the solid solubility of one element in another? (c) Describe how the liquidus and solidus of a binary isomorphous phase diagram can be determined experimentally. (d) Explain how a cored structure is produced in a 70% Cu-30% Ni alloy. How can the cored structure be eliminated by heat treatment?arrow_forward
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