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Which of the following does not affect creep?

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in Engineering Material & Metallurgy by (773k points)
Which of the following does not affect creep?

(a) Grain size

(b) Thermal stability

(c) Chemical reactions

(d) Crystal structure

This question was addressed to me during an online interview.

My doubt is from Mechanisms of Creep & Creep Resistant Materials in portion Plastic Deformation and Creep in Crystalline Materials, Elastic, Anelastic and Viscoelastic Behaviour of Engineering Material & Metallurgy

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Right answer is (d) Crystal structure

Easy explanation: Coarse-grained materials and those having higher thermal stability generally affect creep resistance of a material. The chemical reaction involved and work hardening also influence the creep resistance.

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