Page 1of 2Understanding of Topics Expected of Students Expectations 02(Chapters 5 to 10) MECH 210 Spring 2021
1.What are the major mechanisms of solid state diffusion?
2.What is carburizing process? Its purposes? What is decarburizing?3.What is case hardening?
4.What is the major driving force for atomic diffusion?
5.What is diffusion flux? How is it calculated?
6.What is steady-state diffusion? Fick’s first law?
7.What is nonsteady-state diffusion? Fick’s 2ndlaw?
8.Do you know how to calculate the diffusivity (diffusion coefficient)?
9.Do you know how to use the solution to Fick’s 2ndlaw for surface diffusion?
10.Do you know how to properly use the Gaussian error function table? Find inverse error function value?
11.What is true stress? True strain?
12.How are engineering stress, engineering strain, true stress, and true strain related?
13.Name three elastic moduli. How are they related?14.What is Poisson’s ratio?
15.What mechanical properties can be determined from tensile test? How are they determined?
16.What is elastic deformation? Plastic deformation?
17.What is the physical significance of proportional limit?18.What is mechanical necking in tensiledeformation? What causes the necking?
19.What is the physical meaning of modulus of resilience?
20.What is a slip system?
21.Do you know how to calculate resolved shear stress for a slip system?
22.What’s Schmid’sfactor? What’s the maximum possible value of the factor?
23.Can you describe common strengthening methods for metals?
24.What are the stages in property and grain structure changes during heat treatment of cold-worked metal? Do you know how properties change in these stages?
25.What are the differences between ductile fracture and brittle fracture?
26.What is stress concentration? What is theoretical stress concentration factor?
27.How is the impact toughness of a material determined?
28.Howis the ductile-to-brittle transition temperaturedetermined?
29.What’s mechanical fatigue of materials?
30.What is S-N curve? How is it determined?
31.What is endurance limit (fatigue limit)? What is fatigue strength?
32.What are the main factors that have influence on the impact toughness of metals?