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 3, Problem 23RQ
To determine
Dominant characteristic of BCC, FCC and HCP.
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Questions:
Considering that the steel contains 0.1 – 0.8 wt% carbon by weight, how can you account
for the high percentage of pearlite in the microstructure?
(1)
Hint: See Figure 3, the enlarged picture of pearlite and consider differences in atomic weight
(Fe;C), and overall composition of pearlite.
20 μη
From Metals Handbook, Vol.9, 9th edition, Metallography and Micrestructures, 1985.
Heproduced by permission of ASM International, Materials Park, OH.
Figure 3 High magnification micrograph of pearlite
How phases grow in alloys during crystal growth
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QUESTION 34
Consider a single crystal of RENE NS, a second generation Nbased superaloy. This alloy is used in the hottest part of gas turbine engines for
aerospace. The matrix phase has a face-centered-cubic (FCC) crystal structure. This single crystal has been subjected to a tensile stress that is applied
along a (314) crystal direction (aka, the axis f sip occurs on a (1 1 1) plane in a (101) direction, please cakulate the stress in MPa at which ylelding
will occur. The critical resolved shear stress for this alloy is 800 MPa.
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Chapter 3 Solutions
Degarmo's Materials And Processes In Manufacturing
Ch. 3 - What enables us to control the properties and...Ch. 3 - Â What are the next levels of structure that are...Ch. 3 - Prob. 3RQCh. 3 - Prob. 4RQCh. 3 - Prob. 5RQCh. 3 - Prob. 6RQCh. 3 - What are the three types of primary bonds, and...Ch. 3 - What are some general characteristics of...Ch. 3 - Prob. 9RQCh. 3 - Prob. 10RQ
Ch. 3 - Prob. 11RQCh. 3 - Prob. 12RQCh. 3 - Prob. 13RQCh. 3 - What are some unique property features of...Ch. 3 - Prob. 15RQCh. 3 - Prob. 16RQCh. 3 - Prob. 17RQCh. 3 - What are some of the general characteristics of...Ch. 3 - Prob. 19RQCh. 3 - Prob. 20RQCh. 3 - Prob. 21RQCh. 3 - Prob. 22RQCh. 3 - Prob. 23RQCh. 3 - Prob. 24RQCh. 3 - What is a grain? A grain boundary?Ch. 3 - Prob. 26RQCh. 3 - What is implied by a low ASTM grain�size number?...Ch. 3 - Prob. 28RQCh. 3 - What is Poissons ratio, and under what conditions...Ch. 3 - What is plastic deformation?Ch. 3 - Why do metals retain their strength during plastic...Ch. 3 - Prob. 32RQCh. 3 - Prob. 33RQCh. 3 - What is a dislocation? Using the carpet analogy,...Ch. 3 - What is the difference between an edge dislocation...Ch. 3 - What are some of the common barriers to...Ch. 3 - Prob. 37RQCh. 3 - What is the mechanism (or mechanisms) responsible...Ch. 3 - Why is a fine grain size often desired in an...Ch. 3 - What is an anisotropic property? Why might...Ch. 3 - What is the difference between brittle fracture...Ch. 3 - How does a metal increase its internal energy...Ch. 3 - What is required in order to drive the...Ch. 3 - How might the lowest recrystallization temperature...Ch. 3 - In what ways can recrystallization be used to...Ch. 3 - What is the major distinguishing feature between...Ch. 3 - What is warm working?Ch. 3 - How can deformation and recrystallization improve...Ch. 3 - Why is grain growth usually undesirable?Ch. 3 - Prob. 50RQCh. 3 - As a result of their ionic or covalent bonding,...Ch. 3 - Prob. 52RQCh. 3 - Prob. 53RQCh. 3 - What is the difference between an intrinsic...Ch. 3 - What is required for electrical conductivity in...Ch. 3 - What is required for electrical conductivity in...Ch. 3 - Brass is an alloy of copper with a certain amount...Ch. 3 - It is not uncommon for processing operations to...Ch. 3 - Polyethylene consists of fibrous molecules of...Ch. 3 - Prob. 5P
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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
- Which of the following alloys would form a complete substitutional solid solution? O Metal 1 is HCP, metal 2 is FCC, and atomic radius difference is less than 15%. O Metal 1 is BCC, metal 2 is BCC, and atomic radius difference is at least 15%. O Metal 1 is FCC, metal 2 is FCC, and atomic radius difference is 12%. O Metal 1 is BCC, metal 2 is FCC, and atomic radius difference is 12%. O Metal 1 is FCC, metal 2 is FCC, and atomic radius difference is 15%.arrow_forwardi) What use of copper in engineering applications and explain how the copper materials is affecting that application mechanism? ii) Describe the melting point, and its dominant crystal orientation at room temperature with the support of images, explain the bonding structure of that copper? ii) draw the until cell of the copper and show the slip plane ,compare its ductility to quartz base on your answers. Compare the bonding properties of that crystalline materials with quartz. Explain which crystal have higher melting points and why?arrow_forwardMicrostructure plays a significant role in YS, TS, ductility, thermal conductivity and electrical conductivity which of the following elements would be considered part of the microstructure? O grain shape O All of the answers dislocations O grain size O porosityarrow_forward
- (a) Briefly describe at least five methods to increase the strength of materials. (b) What are the metallurgical/processing techniques employed to enhance the creep resistance of metal alloys? (c) Cite three variables that determine the microstructure of an alloy. (d) What are the most common types of crystal defects and how do they affect properties? (e) Briefly describe the phenomenon of coring and why it occurs.arrow_forwardwhat microstructure is this ASTM A128 materialarrow_forwardQuestion 3: Indicate which of the following microstructures corresponds to Pearlite Bainite Spheroidite_ Martensite What is the reason(s) behind your selection? (b) and Tempered Martensite (e) 10 μm 1 μm (d) 10 μπ 10 µmarrow_forward
- Why does fracture toughness increase with yttria content. Use the phase diagram to explainarrow_forwardIn the Ni-base superalloys used to make turbine blades, which of the following statements are true? Select one or more: U a. There is an atom at each corner of each cube face and one in the centre of each cube face U b. There are two types of phases, with essentially identical crystalline arrangement and different strength O c. The underlying atomic structure is a cubic crystalline type Od. There are two types of phases, with very different crystalline arrangement and different strength There are two types of phases, with essentially identical crystalline arrangement and same strength An atom is present only at each corner of each cube face e. O f.arrow_forwardThis is the microstructure of astm a 128 a high magnesease steel. This microstructure was taken after etching the samples. After etching why did it turn the microstructure colors. What can be determined when looking at the microstructure of this samplearrow_forward
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