1. Determine the hardness 0. 15" in from the surface of a 3" diam
Determine the hardness 0.15" in from the surface of a 3" diam shaft which has been quiet oil-quenched.

2. Determine the hardness 0. 15" in from the surface of a 3" diam
Determine the hardness 0.15" in from the surface of a 3" diam shaft which has been quiet oil-quenched. Use the appropriate set of bar size/quench curves from the website.

3. Determine the hardness 0. 15" in from the surface of a 3" diam
Determine the hardness 0.15" in from the surface of a 3" diam shaft which has been quiet oil-quenched. Use the appropriate set of bar size/quench curves from the website. The curve below is for 4640.

4. What are the possibilities for microstructures in the HAZ for:
a hardened steel
a precipitation hardened alloy

5. What are the possibilities for microstructures in the HAZ for:
a hardened steel
a precipitation hardened alloy

6. Not a description of a type of corrosion cell:
electrolyte concentration
b. dissimilar metals
c. non-homogeneous stress distribution
d. active-passive regions
e. none of the above

7. Not a way to suppress corrosion:
use a carbon steel filler rod when welding stainless steel
b. paint the metal
c. anneal the metal piece
d. make the metal electrically negative
e. use a steel containing a considerable amount of chromium

10. The microcell mainly responsible for corrosion in sensitized stainless steels consists of which of these anode/cathode combinations:
Fe metal/Cr metal
b. low Cr content solid solution/high Cr content solid solution
c. Fe-Cr solid solution/Cr7C3
d. grain boundary/central portion of grain
e. high Cr content solid solution/low Cr content solid solution

11. Not an example of a corrosion microcell:
a deeply scratched galvanized coating on steel
b. bulk of a grain/grain boundary region
c. solid solution matrix/precipitate particles
d. segregation
e. grain A/neighboring grain B

12. A way to "un-sensitize" a sensitized austenitic stainless steel part
cold work it
b. pack carburize it
c. harden and temper it
d. hold it at an appropriately high temperature for an extended period of time
e. plate it with chromium

13. Define:
Alcohol
Acid
Ester
Amine
Amide

14. Define:
Alcohol ---- OH
Acid
Ester
Amine
Amide

15. Define:
Alcohol ---- OH
Acid COOH
Ester
Amine
Amide

16. Define:
Alcohol ---- OH
Acid COOH
Ester –COO–
Amine
Amide

17. Define:
Alcohol ---- OH
Acid COOH
Ester –COO–
Amine ---- NH2
Amide

18. Define:
Alcohol ---- OH
Acid COOH
Ester –COO–
Amine ---- NH2
Amide –CONH–

19. Define:
Condensation reaction
Addition reaction
Polymerization