513 結晶粒微細化処理を施した AZ31 マグネシウム合金板の引張変形挙動

概要

論文の詳細を見る
In this research, as an easy grain refinement method, wrought products of a commercial magnesium alloy AZ31 have been subjected to further cold rolling and subsequent annealing. In the previous report, this method was found to reduce the grain size by more than 15% and to improve tensile properties at room temperature. In this study, high temperature tensile tests were performed on hot-rolled sheets with and without this grain-refining treatment. As a result, higher ductility was not obtained for the grain-refined materials in a low-strain-rate region at 300 and 350℃. This was consistent to the optical microstructural observation showing that the grain grew more rapidly in the grain-refined material during the deformation than in the hot-rolled sheet without grain-refining treatment. This rapid grain growth was attributable to a wider grain-size distribution in the grain-refined materials.
一般社団法人日本機械学会の論文
2002-08-23