MSE170-final.pdf - ENGR/MSE 170 B Final exam (Total:105pts)...

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ENGR/MSE 170 BFinal exam(Total:105pts)Exam is closed book(Two sheets of letter size paper allowed)Instruction:1.Place your name and student ID on top page2.Write legibly3.Show work as need to justify answers4.Circle all final numerical answersProblem 1.Basics (40 points): Answering following questionsa. A hard sphere unit cell of FCC is shown in the figure below. Determine number ofatoms per unit cell, coordination number, and relation between cubic edge a and theradius R.b. What are atomic mechanisms for interstitial and vacancy diffusion? Give two reasonswhy interstitial diffusion is normally more rapid than vacancy diffusion.
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c. Discuss electrical conductivity for pure metals, extrinsic semiconductors, and pureinsulators in terms of electron energy band structure.d. Will the electrical conductivity of fine-pearlite steels be greater than coarse pearlitesteels? Why?e. List three methods for strengthening metals and discuss the their mechanisms.

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Term
Fall
Professor
Fong
Tags
Materials Science, Tensile strength
We have textbook solutions for you!
The document you are viewing contains questions related to this textbook.
Chemistry: Principles and Practice
The document you are viewing contains questions related to this textbook.
Chapter 16 / Exercise 16.73
Chemistry: Principles and Practice
Reger Chem
Expert Verified

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