Foundamental Materials. Circlce the corect answer for 10 questions. Thanks for h

Question

Foundamental Materials. Circlce the corect answer for 10 questions. Thanks for help

1. Titanium alloys can be used for the following list of applications. a. Aircraft structures, space vehicles, and in chemical petroleum industries b. Coins, catalysts and thermocouples C. Windows, sensors and nuclear reactors 2. Refractory metals posses a list of distinctive features. a. Low temperature resistant, high hardness, lo modulus. w b. High melting temperature, large elastic moduli, hardness and strengths. C. Low melting temperature, low elastic moduli, hardness and strengths. 3. Noble metals posses a list of distinctive features a. Low resistance to oxidation, especially at low temperature, hard and brittle. b. High resistance to oxidation, especially at high temperature, soft and ductile c. Moderate resistance to oxidation, at low temperature, hard and brittle. 4. Crystallization of glasses occurs when the material transforms to a crystalline solid by heat treatment. This improves the material properties by a. lowering coefficient of thermal expansion and higher strengths b. y increasing the coefficient of thermal expansion and lower strength. C. None of the above 5. Why is gray coast iron the best choice for engine block application? More than one a. It is relatively easy to cast b. It is is wear resistant. c. has good vibration damping d. all of the above

Explanation / Answer

for first bit answer is

a

for second bit answer is

b

for third bit answer is

a

for fourth bit answer is

a

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