1. An AISA 52130 steel is a. a carbon steel with 0.13 wt.% C b. an alloy steel with 0.13 wt.% C. a carbon steel with 1.3 wt.% C. c. d. an alloy steel with 1.3 wt.% C. 2. Steel hardness increases with a) increasing the temperature. b) increasing carbon percentage. c) finer Fe3C distribution through the other phases. 3. The toughness of martensite can be significantly enhanced via a heat treatment called a) process annealing. b) normalising. c) spheroidzing. d) tempering.

Elements Of Electromagnetics
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ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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1. An AISA 52130 steel is
a.
a carbon steel with 0.13 wt.% C
b. an alloy steel with 0.13 wt.% C.
a carbon steel with 1.3 wt.% C.
c.
d. an alloy steel with 1.3 wt.% C.
2. Steel hardness increases with
a) increasing the temperature.
b) increasing carbon percentage.
c) finer Fe3C distribution through the other phases.
3. The toughness of martensite can be significantly enhanced via a heat treatment called
a) process annealing.
b) normalising.
c) spheroidzing.
d) tempering.
4. An iron-carbon alloy with 0.3 wt.% C is called
a) hypereutectoid steel.
b) hypoeutectoid steel.
c) cast iron.
5. Non equilibrium conditions for steel causes
a cored primary phase structure
b. increasing the fraction of eutectic microstructure
c. increasing the fraction of proeutectoid phase
6. In binary isomorphous system,
a.
a. the two components must have the same crystal structure
b. the two components possess nearly identical atomic radii and electronegativities
c. the two components located close to each other on the periodic table
Transcribed Image Text:1. An AISA 52130 steel is a. a carbon steel with 0.13 wt.% C b. an alloy steel with 0.13 wt.% C. a carbon steel with 1.3 wt.% C. c. d. an alloy steel with 1.3 wt.% C. 2. Steel hardness increases with a) increasing the temperature. b) increasing carbon percentage. c) finer Fe3C distribution through the other phases. 3. The toughness of martensite can be significantly enhanced via a heat treatment called a) process annealing. b) normalising. c) spheroidzing. d) tempering. 4. An iron-carbon alloy with 0.3 wt.% C is called a) hypereutectoid steel. b) hypoeutectoid steel. c) cast iron. 5. Non equilibrium conditions for steel causes a cored primary phase structure b. increasing the fraction of eutectic microstructure c. increasing the fraction of proeutectoid phase 6. In binary isomorphous system, a. a. the two components must have the same crystal structure b. the two components possess nearly identical atomic radii and electronegativities c. the two components located close to each other on the periodic table
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