Wilkes University Brittle Fracture Heat Treatment & Vacancies Discussions

Question Description

I have 5 ENGINEERING matrials question please give me the answer typed.

Please make the answer simple

Write Short Notes on the three topics given below: 30 Points

(Hints: write definitions, give examples, draw sketches, list appropriate equations, explain significance, and mention applications etc. where applicable. About a paragraph (7-8 lines) for each of the chosen topics should be an adequate length for a short note.)

1. Vacancies

2. Heat Treatment

3. Brittle Fracture

Solve the following TWO problems 10 Points

1. Calculate the elastic strain in a polycrystalline aluminum alloy when it is pulled in tension given that the Youngs modulus of the alloy is 80 GPa while the yield strength is 400 MPa.

2. A 10.0 mm diameter cylindrical specimen of a bearing bronze material is pulled under uniaxial tension with a force of 1500 N. The diameter of the bar reduces by 0.67 ?m. Compute the modulus of elasticity for this material given that its Poissons ratio,?, is 0.35.

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