Al-Cu-Sn合金の粒界近接部におけるθ'相の析出

鈴木 寿; 菅野 幹宏; 荒木 一郎

doi:10.2464/jilm.26.427

鈴木寿, 菅野幹宏, 荒木一郎

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ジャーナルフリー

1976 年 26 巻 9 号 p. 427-431

DOI https://doi.org/10.2464/jilm.26.427

詳細

発行日: 1976/09/30 受付日: 1976/04/28 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 : The region (D (θ') region) where finer θ' precipitates were formed densely was found adjacent to the grain boundary in Al-(24)wt%Cu-Sn alloys, when solution-treated, quenched and aged at 200250°Ç. In this report, the fbrmation of the D (θ') region in Al-Cu-Sn alloys was studied in relation to quenching conditions and solution-treatment temperatures (T_s) by using a transmission electron microscope. The results obtained are as follows.
(1) The D (θ') region was found to be caused by appearance of the region where Sn rich phases precipitated densely in the early stage of aging.
(2) The D (θ') region formed only under the condition of fast quenching (i. e. quenching into iced water). The width of D (θ') region and the distance from the grain boundary to D (θ') region increased with lowering T_s.
(3) These results would be explained from the following assumption: Atransient peak of vacancy concentration profile developes adjacent to the grain boundary in the early stage of aging, owing to the formation of secondary defects inside the grain.
Right : The region (D (θ') region) where finer θ' precipitates were formed densely was found adjacent to the grain boundary in Al-(24)wt%Cu-Sn alloys, when solution-treated, quenched and aged at 200250°Ç. In this report, the formation of the D (θ') region in Al-Cu-Sn alloys was studied in relation to quenching conditions and solution-treatment temperatures (T_s) by using a transmission electron microscope. The results obtained are as follows.
(1) The D (θ') region was found to be caused by appearance of the region where Sn rich phases precipitated densely in the early stage of aging.
(2) The D (θ') region formed only under the condition of fast quenching (i. e. quenching into iced water). The width of D (θ') region and the distance from the grain boundary to D (θ') region increased with lowering T_s.
(3) These results would be explained from the following assumption: A transient peak of vacancy concentration profile developes adjacent to the grain boundary in the early stage of aging, owing to the formation of secondary defects inside the grain.

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

The region (D (θ') region) where finer θ' precipitates were formed densely was found adjacent to the grain boundary in Al-(24)wt%Cu-Sn alloys, when solution-treated, quenched and aged at 200250°Ç. In this report, the formation of the D (θ') region in Al-Cu-Sn alloys was studied in relation to quenching conditions and solution-treatment temperatures (T_s) by using a transmission electron microscope. The results obtained are as follows.
(1) The D (θ') region was found to be caused by appearance of the region where Sn rich phases precipitated densely in the early stage of aging.
(2) The D (θ') region formed only under the condition of fast quenching (i. e. quenching into iced water). The width of D (θ') region and the distance from the grain boundary to D (θ') region increased with lowering T_s.
(3) These results would be explained from the following assumption: A transient peak of vacancy concentration profile developes adjacent to the grain boundary in the early stage of aging, owing to the formation of secondary defects inside the grain.

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