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ENGR 250 final exam Questions with Correct Answers.
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ENGR 250 final exam Questions with Correct Answers.
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ENGR 250 final exam Questions with CorrectAnswers
Which of following phases is typically found in low-carbon steel at
room temperature? Correct Answer-Both ferrite and pearlite
a heat treatment in which a material is expose to an elevated temperature
for an extended time period and then slowly cooled is ___________
Correct Answer-Annealing
Example of copper based alloy Correct Answer-Bronze
A fabrication technique that involves that compaction of powdered metal
followed by heat treatment to produce a dense piece is called Correct
Answer-Powder metallurgy or powder processing
Metals that have extremely high melting temperatures are classified as
Correct Answer-refractory metals
Element that is NOT the primary constituent of nonferrous alloys is
Correct Answer-Iron
Example of a light-metal Correct Answer-Aluminum
The composition of a certain alloy is 0.12 wt.% Cu, 1.2 wt.% Mn, 0.1
wt.% Zn, and balance Al. This alloy is a/an Correct Answer-Aluminum-
based alloy
, The characteristic that distinguish stainless steeel from other metals is
Correct Answer-They are more corrosion resistant
The alloy most suitable for forming operations is _____ Correct
Answer-D
types of steels Correct Answer-high carbon, medium carbon, low
carbon, high strength alloy, and stainless steel
types of cast iron Correct Answer-gray iron, ductile iron, white iron,
malleable iron, compacted graphite iron
Limitations of Ferrous Alloys Correct Answer-1) Relatively high
densities
2) Relatively low electrical conductivities
3) Generally poor corrosion resistance
forming methods Correct Answer-forging, rolling, drawing, extrusion
casting Correct Answer-mold filled with molten metal
other metal fabrication metals Correct Answer-welding, powder
metallurgy, and additive manufacturing
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