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Mat_Sci_Exam

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Mat Sci Exam
BROOME COMMUNITY COLLEGE
Binghamton, New York
MET252 Engineering MaterialsName:
Exam #3
Short Answer Questions (3 point each):
1. Cast Irons have what typical ranges of carbon and silicon? ________________________ 2.
All stainless steels contain which element and a minimum of how much? _________________
3. What elements comprise the superalloys? ____________ _______________
_____________ 4. Why are certain metals called “refractory?”
_________________________________________ 5. As silica is cooled from a point above
(the glass transition temperature) Tg to a point below Tg, it changes from an ______________
to a ______________. 6. What compound, when added to silica, produces a glass with good
chemical resistance? ____________ 7. What is the approximate percentage of carbon in 10110
steel? _______________________
8. Describe each step of a heat treatment process that would produce 1050 steel with a yield
strength of at least 150 MPa and a percent elongation to failure of at least 15% (you may find
Figures 13-4, 13-9 and 13-7a useful) (Include time, temperature and the microconstituents
present for each step. (25 pts.)
MET252
Exam #3
page 2
9. Explain in your own words all of the process steps involved in slip casting. (10 pts.)
10. Pick a material from the following list that would work well for the applications below. For
each give one reason for your choice. (5 pts. each)
2090-T6 Al
3004-0 Al
Copper
Beryllium
Titanium Alloy
Gray Cast Iron

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