K-0732 構造用マグネシウム合金の結晶組織制御による衝撃延性の改善(S10-1 衝撃材料試験における新展開(1))(S10 衝撃材料試験における新展開)

概要

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Improvement of tensile mechanical properties under dynamic loading is demonstrated for a commercial magnesium alloy. Ductility in magnesium is enhanced by the addition of alloying elements. Further enhancement of ductility can be achieved by the refining grain structures for the commercial magnesium alloy. The high ductility of the fine-grained alloy is owing to the absence of macroscopic cracking at mechanical twin boundaries, while the coarse-grained alloy fractured at a smaller strain owing to the stress concentration at twin boundaries. It should be expected that the fine-grained alloy exhibits the high speed impact performance during foreign object damage.
社団法人日本機械学会の論文
2001-08-22