急冷凝固したAl-1.8%Cr-1.7%Zr合金の時効析出

谷口 靖; 古城 紀雄; 田井 英男; 堀 茂徳

doi:10.2464/jilm.37.300

谷口靖, 古城紀雄, 田井英男, 堀茂徳

著者情報

ジャーナルフリー

1987 年 37 巻 4 号 p. 300-305

DOI https://doi.org/10.2464/jilm.37.300

詳細

発行日: 1987/04/30 受付日: 1986/08/26 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 : Age hardening behavior and precipitation structures were investigated for ribbons mainly of both an Al-1.8%Cr-1.7%Zr alloy and the alloy with the further additional element of Si, which were prepared by a rapid solidification method using a single roll. Then, the role of Cr or Si in the precipitation hardening process has been examined.
As a result, age hardening took place more remarkably in the Al-1.8%Cr-1.7%Zr alloy than that in a Al-1.7%Zr binary alloy. It is condidered that this is caused by the precipitation of fine and spherical particles of the metastable Al 3Zr phase with the Ll2 structure, which has been made possible because the additional element of Cr retards the precipitation with the grain boundary reaction. By the addition of Si, together with Cr, to the Al-1.7%Zr alloy, the precipitation of the fine and spherical particles of the metastable phase has been accelerated. Thus, the addition of Si results in reaching higher values of the peak hardness.
Right : Age hardening behavior and precipitation structures were investigated for ribbons mainly of both an Al-1.8%Cr-1.7%Zr alloy and the alloy with the further additional element of Si, which were prepared by a rapid solidification method using a single roll. Then, the role of Cr or Si in the precipitation hardening process has been examined.
As a result, age hardening took place more remarkably in the Al-1.8%Cr-1.7%Zr alloy than that in a Al-1.7%Zr binary alloy. It is condidered that this is caused by the precipitation of fine and spherical particles of the metastable Al ₃Zr phase with the Ll₂ structure, which has been made possible because the additional element of Cr retards the precipitation with the grain boundary reaction. By the addition of Si, together with Cr, to the Al-1.7%Zr alloy, the precipitation of the fine and spherical particles of the metastable phase has been accelerated. Thus, the addition of Si results in reaching higher values of the peak hardness.

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

Age hardening behavior and precipitation structures were investigated for ribbons mainly of both an Al-1.8%Cr-1.7%Zr alloy and the alloy with the further additional element of Si, which were prepared by a rapid solidification method using a single roll. Then, the role of Cr or Si in the precipitation hardening process has been examined.
As a result, age hardening took place more remarkably in the Al-1.8%Cr-1.7%Zr alloy than that in a Al-1.7%Zr binary alloy. It is condidered that this is caused by the precipitation of fine and spherical particles of the metastable Al ₃Zr phase with the Ll₂ structure, which has been made possible because the additional element of Cr retards the precipitation with the grain boundary reaction. By the addition of Si, together with Cr, to the Al-1.7%Zr alloy, the precipitation of the fine and spherical particles of the metastable phase has been accelerated. Thus, the addition of Si results in reaching higher values of the peak hardness.

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