Determine the hardness 0'15" in from the surface of a 3" diam' 4640 shaft which has been quiet oilqu

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• Determine the hardness 0.15" in from the surface
  of a 3" diam. 4640 shaft which has been quiet
  oil-quenched.

2

• Determine the hardness 0.15" in from the surface
  of a 3" diam. 4640 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. 4640 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

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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

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Define Alcohol Acid Ester Amine Amide
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Define Alcohol ---- OH Acid Ester Amine Amide
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Define Alcohol ---- OH Acid ----
COOH Ester Amine Amide
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Define Alcohol ---- OH Acid ----
COOH Ester COO Amine Amide
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Define Alcohol ---- OH Acid ----
COOH Ester COO Amine ---- NH2 Amide
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Define Alcohol ---- OH Acid ----
COOH Ester COO Amine ---- NH2 Amide CONH
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Define Condensation reaction Addition
reaction Polymerization