Materials Science And Engineering Properties
Materials Science And Engineering Properties
1st Edition
ISBN: 9781111988609
Author: Charles Gilmore
Publisher: Cengage Learning
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Chapter 9, Problem 7CQ
To determine

The point of beginning of stage II creep.

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For a bronze alloy, the stress at which plastic deformation begins is 275 MPa (40,000 psi), and the modulus of elasticity is 115 GPa (16.7 x106 psi). (a) What is the maximum load that may be applied to a specimen with a cross-sectional area of 325 mm2 (0.5 in.2) without plastic de- formation? (15pts)(b) If the original specimen length is 115 mm (4.5 in.), what is the maximum length to which it may be stretched without causing plastic deformation?(15pts)
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1) Please indicate in the stress-strain diagram given below the stress levels that can cause creep. 2) The effect of an increase in service temperature or applied stress is to shift the 3) Dislocation density . In Region number (...) while creep deformation is increasing at an increasing rate. 4) Dislocation density is remains constant in Region number (.) while the creep rate is increasing. 5) For some applications the amount of creep in Region number (.) is taken as the design criteria.
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Materials Science And Engineering Properties
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ISBN:9781111988609
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