Foundations of Materials Science and Engineering
6th Edition
ISBN: 9781259696558
Author: SMITH
Publisher: MCG
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Textbook Question
Chapter 8.15, Problem 45SEP
The cooling curve of an unknown metal shows a clear plateau at a specific temperature and no other interesting features. What does the cooling curve tell you about the metal?
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1. Why does the tensile strength of steel, which contains only austenite at room temperature, differ fromsteel that shows only pearlite in its microstructure? Give two important reasons for the difference.
2. What general prerequ_isites exist for the formation of martensite in steel?
3. What is an isothermal transformation of a material in the solid state condition?
4. Draw a typical isothermal transformation diagram for plain .carbon eutectoid steel and indicate thevarious decomposition products expected by simple diagrammatic drawing.
HOME WORK
1
The figure shows two work pieces of steel of 0.3 %C
and 1.3 %C with different dimensions. compare
between them regarding the diagram that shows the
stages of treatments. If we want to treat the samples as
follows:-
p+ Fe,C
1- Sample No.1 with softening annealing treatment.
2- Sample No.2 with normalizing treatment.
a + P|
2
1
Dimensions of (1*1*1) inch
Dimensions of (2*2*2) inch
HOME WORK
The figure shows two work pieces of steel of 0.3 %C
and 1.3 %C with different dimensions. compare
between them regarding the diagram that shows the
stages of treatments. If we want to treat the samples as
follows:-
P+ Fe,C
1- Sample No.1 with softening annealing treatment.
2- Sample No.2 with normalizing treatment.
a + P
Dimensions of (1*1*1) inch
Dimensions of (2*2*2) inch
menlurgy ur. eassim sn. sany.
Chapter 8 Solutions
Foundations of Materials Science and Engineering
Ch. 8.15 - Define (a) a phase in a material and (b) a phase...Ch. 8.15 - In the pure water pressure-temperature equilibrium...Ch. 8.15 - How many triple points are there in the pure iron...Ch. 8.15 - Write the equation for the Gibbs phase rule and...Ch. 8.15 - Refer to the pressuretemperature equilibrium phase...Ch. 8.15 - (a) What is a cooling curve? (b) What type of...Ch. 8.15 - Prob. 7KCPCh. 8.15 - What is an alloy? What is the difference between...Ch. 8.15 - Prob. 9KCPCh. 8.15 - What is the significance of the liquidus curve?...
Ch. 8.15 - Prob. 11KCPCh. 8.15 - Prob. 12KCPCh. 8.15 - Prob. 13KCPCh. 8.15 - Describe the mechanism that produces the...Ch. 8.15 - Can coring and surrounding occur in a...Ch. 8.15 - What is a monotectic invariant reaction? How is...Ch. 8.15 - Write equations for the following invariant...Ch. 8.15 - How are eutectic and eutectoid reactions similar?...Ch. 8.15 - Distinguish between (a) a terminal phase and (b)...Ch. 8.15 - Distinguish between (a) an intermediate phase and...Ch. 8.15 - What is the difference between a congruently...Ch. 8.15 - Consider an alloy containing 70 wt% Ni and 30 wt%...Ch. 8.15 - Consider the binary eutectic coppersilver phase...Ch. 8.15 - If 500 g of a 40 wt% Ag60 wt% Cu alloy is slowly...Ch. 8.15 - A lead-tin (PbSn) alloy consists of 60 wt%...Ch. 8.15 - A PbSn alloy (Fig. 8.12) contains 40 wt% and 60...Ch. 8.15 - An alloy of 30 wt% Pb70 wt% Sn is slowly cooled...Ch. 8.15 - Consider the binary peritectic iridiumosmium phase...Ch. 8.15 - Consider the binary peritectic iridiumosmium phase...Ch. 8.15 - Consider the binary peritectic iridiumosmium phase...Ch. 8.15 - In the copperlead (CuPb) system (Fig. 8.24) for an...Ch. 8.15 - For an alloy of Cu70 wt% Pb (Fig. 8.24), determine...Ch. 8.15 - What is the average composition (weight percent)...Ch. 8.15 - Consider an Fe4.2 wt% Ni alloy (Fig. 8.17) that is...Ch. 8.15 - Consider an Fe5.0 wt% Ni alloy (Fig. 8.17) that is...Ch. 8.15 - Determine the weight percent and composition in...Ch. 8.15 - Determine the composition in weight percent of the...Ch. 8.15 - Draw, schematically, the liquidus and the solidus...Ch. 8.15 - Consider the CuZn phase diagram of Figure 8.26. a....Ch. 8.15 - Consider the nickelvanadium phase diagram of...Ch. 8.15 - Consider the titaniumaluminum phase diagram of...Ch. 8.15 - What is the composition of point y in Figure...Ch. 8.15 - In Figure 8.12, determine the degree of freedom,...Ch. 8.15 - The cooling curve of an unknown metal shows a...Ch. 8.15 - In the PbSn phase diagram (Fig. 8.12), answer the...Ch. 8.15 - Based on the CuAg phase diagram in Figure P8.23,...Ch. 8.15 - Based on the PdAg phase diagram in Figure EP 8.3,...Ch. 8.15 - Prob. 49SEPCh. 8.15 - Derive the lever rule for the amount in weight...Ch. 8.15 - Based on the AlNi phase diagram given in Figure...Ch. 8.15 - Prob. 52SEPCh. 8.15 - Based on the Al2O3SiO2 phase diagram in Figure...Ch. 8.15 - (a) Design a CuNi alloy that will be completely...Ch. 8.15 - Prob. 55SEPCh. 8.15 - Given that Pb and Sn have similar tensile...Ch. 8.15 - Consider the sugarwater phase diagram shown in...Ch. 8.15 - In Figure P8.57, if 60 g of water and 140 g of...Ch. 8.15 - In Figure P8.57, if 30 g of water and 170 g of...Ch. 8.15 - At 80C, if the wt% of sugar is 80%, (a) what...Ch. 8.15 - (a) Based on the phase diagram in Figure P8.61,...Ch. 8.15 - Referring to Figure P8.61. explain what happens as...Ch. 8.15 - Referring to Figure P8.61, (a) explain what...Ch. 8.15 - Using Figure P8.40, explain what the phase diagram...Ch. 8.15 - Using Figure P8.40. explain why, according to the...Ch. 8.15 - (a) In the TiAl phase diagram. Figure P8.42, what...Ch. 8.15 - Draw an approximate hypothetical phase diagram for...Ch. 8.15 - Draw the hypothetical phase diagram for a binary...
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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
- 1. Using the TTT diagram for Eutectoid Steel, specify the constituents and their approximate percentages of a small specimen subjected to the following time-temperature treatments. All begin with a completely Austenized specimen: - Rapidly cool to 650°C, hold for 100 seconds, then quench to room temperature. Rapidly cool to 500°C, hold for 100 seconds, then quench to room temperature. - Rapidly cool to 350°C, hold for 100 seconds, then quench to room temperature. - Rapidly cool to 100°C, hold for 100 seconds, then quench to room temperature. - Rapidly cool to 500°C, hold for 4 seconds, quench to 300°C, hold for 200 seconds, then quench to room temperature.arrow_forwardThe figure shows two work pieces of steel of 0.3 %C and 1.3 %C with different dimensions. compare between them regarding the diagram that shows the stages of treatments. If we want to treat the samples as follows: - - 1- Sample No.1 with softening annealing treatment. 2- Sample No.2 with normalizing treatment. Subject: Metallurgyarrow_forwardDirect hardening can be performed on steel containing at least________ carbon.arrow_forward
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- 3. What effects do the alloying additions have on the microstructure and mechanical properties of air-cooled (normalized) steel specimens? 1 4. What effects do the alloying additions have on the microstructure and mechanical properties of furnace-cooled (annealed) steel specimens?arrow_forwardQuestion : 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_forwardWhen performing a quench to cool a product, the quench rate affects the outcome of the process. TRUE OR FALSE: 3 principal driving forces for the development of mechanical properties during heat treatment. Group of answer choices Microstructure Changes Formation of Surface Oxide Cooling Rate Ambient Temperature Heating Rate Diffusion Rate Heating Methodarrow_forward
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