Answer to Question #287447 in Material Science Engineering for jay

Question

A.     Define mechanical property. 

B.     In the most basic terms explain what happens during heat treatment.

C. A metal fabricator wants to make a spur gear from mild steel. However, the application of the entire gear requires hardness and wear-rcsistance. State and explain the most suitable heat treatment process that would impart these properties.

D. A specimen of mild steel was put under tensile testing; the dimensions of the specimen before testing were (50 mm gauge length and 12 mm diameter). After the test the specimen had dimensions (55 mm in length and 1 1.46 mm diameter). Calculate:

i.                    Percent elongation

ii.                 Percent reduction in area

E. Sketch a typical stress strain cure for mild steel and indicate the following points.

1. Elastic Limit ii. Yield Point iii. Fracture Point

Answer 1

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