軽金属
Online ISSN : 1880-8018
Print ISSN : 0451-5994
ISSN-L : 0451-5994
研究論文
レーザ照射を施した工業用純アルミニウムおよびAl–Mg合金板の集合組織と曲げ加工性
又吉 祐子酒井 孝金 英俊小山 純
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2015 年 65 巻 8 号 p. 339-343

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The study of texture control in aluminum alloys is thriving. For example, Cube orientation has been found to be effective for improving bending workability of Al–Mg–Si alloys. In this study, commercial-purity aluminum (A1050-H18) and Al–Mg alloy (A5052-O) plates were irradiated by a laser beam, measured using a SEM apparatus and then bending tested. In A1050-H18 subjected to slower laser irradiation, Cube orientation was developed as a result of recrystallization due to the higher achieving temperatures than 680 K. In A5052-O, on the other hand, Cube orientation was developed in all the investigated irradiation conditions. From IPF maps of both of specimens, preferential orientation was found to be accumulated into the ‹001› direction, resulting in the softening and thus enhanced bending workability by the laser irradiation, while ‹101› direction containing Goss orientation is reduced. The area fraction of Cube orientation did not affect the bending workability, suggesting that softening has a synergistic effect with texture control.

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