軽金属
Online ISSN : 1880-8018
Print ISSN : 0451-5994
研究論文
通電熱処理と人工時効によるAl–Mg–Si合金板のプレス成形性と製品強度の向上
石黒 農牧 清二郎森 謙一郎
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56 巻 (2006) 6 号 p. 313-316

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A treatment consisting of resistance heat treatment and artificial aging was developed to improve the product strength and press formability of Al–Mg–Si alloy sheets having paint bake hardenability used for automobile body panels. In this treatment, the sheets are re-solution heat-treated by resistance heating and water quenching just before the press forming. The formed sheets are artificially aged just after the press forming to increase the product strength. In the experiment, Al–0.60%Si–0.74%Mg (A6061) alloy sheets were chosen. The solution heat treatment of the sheets was sufficiently accomplished by the rapid resistance heat treatment, and the press formability of the sheets was improved. The hardness of formed products is increased by the artificial aging and paint bake hardening. It was found that the present heat treatment is effective in improving the product strength and press formability of the Al–Mg–Si alloy sheets having the paint bake hardenability.

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© 2006 一般社団法人 軽金属学会
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