SUBSTRUCTURE CHANGES DURING CREEP OF TI-50 MOL-PERCENT-AL IN LOW-STRESS RANGE

被引：10

作者：

ISHIKAWA, Y ^{[1
]}

KIYOKAWA, T ^{[1
]}

OIKAWA, H ^{[1
]}

机构：

[1] TOHOKU UNIV,FAC ENGN,DEPT MAT SCI,SENDAI,MIYAGI 98077,JAPAN

来源：

MATERIALS TRANSACTIONS JIM | 1995年 / 36卷 / 08期

关键词：

TITANIUM ALUMINIDE; COMPRESSIVE CREEP; SUBSTRUCTURE; DISLOCATION DENSITY;

D O I：

10.2320/matertrans1989.36.1041

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Structures formed during creep of single phase polycrystalline TiAl in the low stress range has been investigated. Little dynamic recrystallization is observed even at the acceleration stage where creep rate becomes five times higher than the minimum value. Dislocations observed around the stage of the minimum creep rate are characterized. The dislocation density ratio of superdislocations to total dislocations at the minimum creep rate in the low stress range is quite different from that in the intermediate stress range.

引用

页码：1041 / 1047

页数：7

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