Annealing Behavior of Solution Treated and Aged Al-0.2wt% Sc Deformed by ARB

被引：15

作者：

Borhani, Ehsan ^{[1
]}

Jafarian, Hamidreza ^{[1
]}

Adachi, Hiroki ^{[1
]}

Terada, Daisuke ^{[1
]}

Tsuji, Nobuhiro ^{[1
]}

机构：

[1] Kyoto Univ, Dept Mat Sci & Engn, Sakyo Ku, Kyoto 6068501, Japan

来源：

NANOMATERIALS BY SEVERE PLASTIC DEFORMATION: NANOSPD5, PTS 1 AND 2 | 2011年 / 667-669卷

关键词：

Recrystallization; Al-Sc; precipitation; ARB; RECRYSTALLIZATION BEHAVIOR; AL3SC; EVOLUTION; ALLOYS;

D O I：

10.4028/www.scientific.net/MSF.667-669.211

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The effect of prior and subsequent precipitation on recrystallization behavior during the isothermal annealing of an Al-0.2%wt.Sc alloy heavily deformed by accumulative roll bonding (ARB) up to 10 cycles at ambient temperature was investigated. Three kind of different microstructures, i.e., solution treated one, 300 degrees C pre-aged one and 400 degrees C pre-aged one, were prepared as the starting structures for the ARB process. It is found that precipitation pinning effect of Al3Sc suppresses recrystallization and especially the 400 degrees C pre-aging was effective to stabilize the ultrafine grained structure of the matrix. Dissolution of pre-aging Al3Sc precipitates was suggested by re-precipitation during annealing of the ARB processed specimens at around 300 degrees C.

引用

页码：211 / 216

页数：6

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