Materials Science And Engineering Properties
Materials Science And Engineering Properties
1st Edition
ISBN: 9781111988609
Author: Charles Gilmore
Publisher: Cengage Learning
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Chapter 5, Problem 12ETSQ
To determine

The microstructure of the highest strength carbon steel with some ductility.

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16) Which of the following mechanical properties can be measured / calculated from this tensile stress-strain graph of a generic metal alloy? (pick all that apply) a. Poisson's ratio b. Elastic modulus C. Shear modulus d. Flexural modulus e. Fracture toughness 17) Interstitial sites in a FCC lattice are called a. Rhombohedral and cubic b. Cubic and hexagonal C. Monoclinic and triclinic Stress (MPa) 2000 MPa 2000 1000 1000 0.000 0.005 0.010 0.015 Strain 0.000 0.020 0.040 Strain 0.060 0.080 d. Tetrahedral and octahedral e. Heterogeneous and homogeneous 18) Traditional photovoltaics rely on which structural feature to separate charge carriers? a. The p-n junction b. The grain boundaries C. The twin boundaries d. The electron-hole pair e. The band gap 19) The process by which lithium ions move in to and out of graphite in a lithium-ion battery is called a. Intercalation b. Stacking C. Precipitation d. Phase combination e. lonization 20) A polymer obtained by the polymerization of two types…
Which of the following statements is incorrect about ceramics? A Ceramics have very weak interatomic bonding. (B) Ceramics have a low coefficient of thermal expansion © Ceramics can be crystalline or nanocrystalline (amorphous). (D Ceramics can be used as a matrix material in composites.
In an engineering application, the material is a strip of iron with a fixed crystallographic structure subject to a tensile load during operation. The part failed (yielded) during operation and needs to be replaced with a component with better properties. You are told that two other iron strips had failed at yield stresses of 110 and 120 MPa, with grain sizes of 30 microns and 25 microns respectively. The current strip has a grain size of 20 microns. The diameter of the rod is 1 mm and the load applied is 100 N. What is the yield stress of the new part C and would you recommend it for operation? Select one: Oa. 133.5 MPa, yes O b. OC. Od Oe. 120.5 MPa, no 129.5, yes 140.5, no 123.5 MPa, yes
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