318 組織微細化したAZ31Mg合金の高温下における機械的諸特性(アルミニウム合金およびマグネシウム合金の創製と加工(2),ものづくりにおける基礎研究と先端技術の融合)

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This study examined the relationships of mechanical properties and plastic work parameters, characteristics of super-plastic deformation, and structural changes for fine-grain structure AZ31 Mg alloy by severe strain forming at strain rate from 10-4 to 10-2s-1 under high temperature (423-623K). It was found that at test temperature 623K and strain rate 10-4, strain rate sensitivity exponent, m-value remained at about 0.3 over and an elongation was examined 200% or over at all sampling direction, that is, the superplastic deformation behavior occurred at these conditions. This fined structure material has remarkable high deformability on comparison with those of commercial material.
2010-11-27