IGNOU PHE 13 2018 - Among the melt growth processes which method is the cleanest? Give rea

Question

Among the melt growth processes which method is the cleanest? Give reasons.

27 Jan 2018

Answer :

Word Count : 210

Strain-anneal method is the cleanest. because Strains below a critical level actually cause the grain size to fall rather than rise. In the case of tensile strains, the values used fall in the range 0.5 to 15%. When samples are rolled the reductions are large, say 10 to 80%. In the case of metallic materials, the samples prior to straining are very near fully annealed. In the case of tapes a usual procedure is to hot roll to a 50 or even

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