302 結晶粒微細化処理を施したAZ31マグネシウム合金の塑性加工性(関東支部茨城講演会)

概要

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Although in late years, magnesium has been paid attention to for lightweight to solve global environmental problem such as global warming, it has poor plastic formability at room temperature because of its crystal structure of hcp. In this study, firstly an AZ31 magnesium alloy extrusion has been subjected to a grain refinement treatment consisting of cold rolling and subsequent annealing. Secondly the formability of the extrusion has been assessed by means of hydrostatic-pressure bulge test. As a result, bulge height was higher for the treated specimen than for the as-received specimen. Thickness distribution of the specimen after the bulge test has also been measured, resulting in a more marked reduction in thickness at the bulge top in the treated specimen. The difference in the thickness reduction between the treated and as-received specimen has been widened as the testing temperature is raised.
一般社団法人日本機械学会の論文
2005-09-08