Al-Zn-Mg-Cu合金の焼入感受性に及ぼすZr添加の影響

鈴木 寿; 菅野 幹宏; 斉藤 洋; 糸井 一博

doi:10.2464/jilm.33.29

鈴木寿, 菅野幹宏, 斉藤洋, 糸井一博

著者情報

ジャーナルフリー

1983 年 33 巻 1 号 p. 29-37

DOI https://doi.org/10.2464/jilm.33.29

詳細

発行日: 1983/01/31 受付日: 1982/06/29 J-STAGE公開日: 2008/07/23 受理日: - 早期公開日: - 改訂日: -
訂正情報
訂正日: 2008/07/23 訂正理由: - 訂正箇所: 論文抄録訂正内容: Wrong : 7050 type Al-Zn-Mg-Cu alloys containing Zr 0 to 0.16% were heat treated in different ways. The hard- ness and electrical resistivity measurements and transmission electron microscopy were employed. The nose temperature of time-temperature-precipitation curves determined by resistivity measurements is about 350ªC independently of Zr contents. However, the precipitation in Zr containing alloys is markedly enhanced. The quench-sensitivity of Zr containing alloys is proved to be governed by heterogeneous precipitation of η (or T) phase on Zr-rich compounds. These compounds are different from those having Ll₂ structure and coherent with the matrix. The number of compounds acting as precipitation sites increases with the cold rolling reduction. The quench-sensitivity, therefore, depends on the cold rolling reduction.
Right : 7050 type Al-Zn-Mg-Cu alloys containing Zr 0 to 0.16% were heat treated in different ways. The hard- ness and electrical resistivity measurements and transmission electron microscopy were employed. The nose temperature of time-temperature-precipitation curves determined by resistivity measurements is about 350°C independently of Zr contents. However, the precipitation in Zr containing alloys is markedly enhanced. The quench-sensitivity of Zr containing alloys is proved to be governed by heterogeneous precipitation of η (or T) phase on Zr-rich compounds. These compounds are different from those having Ll₂ structure and coherent with the matrix. The number of compounds acting as precipitation sites increases with the cold rolling reduction. The quench-sensitivity, therefore, depends on the cold rolling reduction.

訂正日: 2008/07/23 訂正理由: - 訂正箇所: 発行日訂正内容: 訂正前 : 19830130
訂正後 : 19830131

訂正日: 2008/07/23 訂正理由: - 訂正箇所: PDFファイル訂正内容: -

抄録

7050 type Al-Zn-Mg-Cu alloys containing Zr 0 to 0.16% were heat treated in different ways. The hard- ness and electrical resistivity measurements and transmission electron microscopy were employed. The nose temperature of time-temperature-precipitation curves determined by resistivity measurements is about 350°C independently of Zr contents. However, the precipitation in Zr containing alloys is markedly enhanced. The quench-sensitivity of Zr containing alloys is proved to be governed by heterogeneous precipitation of η (or T) phase on Zr-rich compounds. These compounds are different from those having Ll₂ structure and coherent with the matrix. The number of compounds acting as precipitation sites increases with the cold rolling reduction. The quench-sensitivity, therefore, depends on the cold rolling reduction.

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