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Engineering Materials & Metallurgy Practice Test: Plastic Deformation and Creep in Crystalline Materials, Elastic, Inelastic and Viscoelastic Behavior
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Engineering Materials & Metallurgy Practice Test: Plastic Deformation and Creep in Crystalline Materials, Elastic, Inelastic and Viscoelastic Behavior
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25 Questions

1. Iron base alloys have melting point around __________
2. Relaxation modulus is defined as __________
3. MgO and Al2O3 can be used at high temperature creep resistance due to _________
4. For an isentropic material, the stress-strain relationship is known as _________
5. The process of increasing strength of a material by changing grain size known as __________
6. Which of the following will be rendered useless for prevention of creep?
7. What is the SI unit for the stress of a material?
8. _______ is known as steady-state creep.
9. At what value of the index of strain rate sensitivity does the material behave superplastically?
10. Which of the following does not affect creep?
11. The time required for the occurrence of creep is known as _________
12. Why can’t cold working be used for strengthening in case of plastic deformation?
13. Which method is used for measuring the viscoelastic behavior of materials?
14. What is the CRSS value of a copper crystal?
15. How many slip systems are present in a NaCl crystal?
16. According to ________ five independent systems are required to maintain the reliability of grain boundaries.
17. Creep occurs at a temperature above ________
18. What is the value of Boltzmann’s constant?
19. Which of the following represents the slip mode of plastic deformation?
20. What is the Hall-Petch constant for Iron?
21. Viscoelasticity exhibits which of the following properties?
22. The ability of a material to return to its original state when an external force is removed is called __________
23. Strengthening of an iron base, nickel bade, and cobalt base alloys is done by __________
24. __________ experiences creep at room temperature.
25. The elastic component of viscoelastic material is modeled as _________