SUS304ステンレス鋼のマルテンサイト変態を利用した磁気的傾斜機能材料

概要

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Stress-induced martensitic transformation was applied to produce a monolithic, magnetic-functionally gradient material (magnetic-FGM). Wedge-shaped plates of SUS304 austenitic stainless steel with inclination angles of 1 and 3 degrees were deformed in tension at room temperature. A less slanted specimen showed strain distribution graded nearly linearly along the tensile axis, which provided a good gradient of magnetic property resulting from the formation of ferro-magnetic α' martensite. A specimen with an inclination angle of 3 degrees, however, exhibited more inhomogeneity of plastic deformation which is unsuitable for the magnetic-FGM. A theoretical evaluation for the distributions of strain and saturation magnetization was conducted using a simple model, which turned out to be in good accordance with the experimental results. Other processing methods and engineering applications of the magnetic-FGM were also discussed.
一般社団法人日本機械学会の論文
1993-04-25