Effect of antiphase domain boundaries on prism slip in Ti3Al single crystals

被引：0

作者：

Koizumi, Y ^{[1
]}

Minamino, Y ^{[1
]}

Tsuji, N ^{[1
]}

Nakano, T ^{[1
]}

Umakoshi, Y ^{[1
]}

机构：

[1] Osaka Univ, Dept Adapt Machine Syst, Suita, Osaka 5650871, Japan

来源：

DEFECT PROPERTIES AND RELATED PHENOMENA IN INTERMETALLIC ALLOYS | 2003年 / 753卷

关键词：

D O I：

暂无

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Effect of antiphase domain boundaries (APDBs) on yielding and dislocation structure were investigated in Ti3Al single crystals oriented for prism slip. The yield stress greatly depended on the size of antiphase domains (APDs). The yield stress of Ti3Al with the average APD size of 35nm was about six times higher than that of Ti3Al without APDB. Single dislocations (isolated superpartial dislocations) were observed in the deformed Ti3Al single crystal with APD sizes smaller than 100nm, while superdislocation pairs were observed in those with larger APDs. The mechanism of the interaction between the prism dislocations and APDBs is discussed.

引用

页码：267 / 272

页数：6

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