317 微細組織AZ31マグネシウム合金の機械的特性に及ぼすショットピーニングの効果(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)

概要

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The effect of shot peening (SP) at various temperature on mechanical properties, i.e. fatigue, tensile and bending characteristics, for fine-grained AZ31 magnesium alloy was investigated. The residual stress was occurred by SP, which was examined at worm temperature was higher than those of room temperature SP. Although elongation decreased little for this material with high residual stress, tensile and bending characteristics improved remarkable. Especially, the endurance limit of fatigue improved 22% higher on comparison with that of non-SP material. On the other hand, under high temperature SP, the material which have the graded microstructure from surface to about 0.5mm in insides was able to be created.
2010-11-27