ME3340 Engineering Materials (Spring 2011)
Final
Name
Open book and close notes (but a calculator is allowed). Work on all six problems (25 points
each).
Problem 1. For many viscous materials, the viscosity may be defined in terms of stress and
strain rat
\
Solution: use Eq.(7-24) and Fig.7-25(b) in the design analysis for the ductile iron
T = 500 + 273 = 773 (K)
Stress rupture life: t = 10 years = 10 x 366 x 24 = 87,840 (hours)
So the required Larson-Miller parameter for ductile iron is
L.M. = 773/1000*(3
12]! Suppose that age hardening is possible in the AlhIg system {see Figure
1210.}
{a} Recommend an articial age-hardening heat treatment for each of the
following alloys; and
[h] compare the amount of the it precipitate that forms from your treatment of
Problem 1 (Chapter 3, 34 points). Consider a cubic crystal:
Write out the Miller indices for the planes A, B, C, and D sketched in Figure (a).
Write out the direction indices for the directions E, F, G, H and I sketched in Figure (b).
All non-corner point
ME3340 Engineering Materials (Fall 2013)
Name
Test 1
Open book and close notes (but a calculator is allowed). Work on all three problems.
Problem 1 (Chapter 3). An X-ray diffractometer recorder chart for an element that has
cubic crystal structure showed
411 We replace IE atomic percent of the chromium atoms in its BCC crystal with
tantalum. Xray diffraction shows that the lattice parameter is H.29153 nn1.
Calculate the density of the alloy.
Solution: '9 = 2) {0.925) [31.996 gs'n1:o1) + KEG???) [180.95
ME3340 Engineering Materials (Fall 20XX)
Test 2
Name
Open book and close notes (but a calculator is allowed). Work on all three problems.
Problem 1 (Chapters 6/8). A ductile FCC metal deforms elastic-plastically under uniaxial tension. The total
true stra
ME3340 (Fall 2013)
Department of Mechanical Engineering (SMU)
ME3340 Engineering Materials
Instructor
Professor Wei Tong
Phone
8-1269
Office
200G Embrey
E-mail
[email protected]
Office
Hours
5-6pm, Tuesdays & Thursdays
Other
Times
By appointment only
Textbook
ME3340 Engineering Materials (Fall 20XX)
Test 1
Name
Open book and close notes (but a calculator is allowed). Work on all four problems.
Problem 1 (Chapter 3, 34 points). Consider a cubic crystal:
(a) Write out the Miller indices for the planes A, B, C, a
ME3340 Engineering Materials (Fall 20XX)
Test 2
Name
Open book and close notes (but a calculator is allowed). Work on all three problems.
Problem 1 (Chapters 6/8). A ductile FCC metal deforms elastic-plastically under
uniaxial tension. The total true stra