THE EFFECTS OF DIFFUSIONAL RELAXATION ON THE CREEP STRENGTH OF COMPOSITES

被引：96

作者：

ROSLER, J ^{[1
]}

BAO, G ^{[1
]}

EVANS, AG ^{[1
]}

机构：

[1] UNIV CALIF SANTA BARBARA, COLL ENGN, DEPT MAT, SANTA BARBARA, CA 93106 USA

来源：

ACTA METALLURGICA ET MATERIALIA | 1991年 / 39卷 / 11期

关键词：

D O I：

10.1016/0956-7151(91)90090-N

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The creep strengthening imparted by reinforcements is shown to be limited by diffusional assisted flow. Diffusional flow is demonstrated to be rapid at low strain-rates and small particle sizes, causing the strengthening to be eliminated. However, a critical reinforcement aspect ratio is identified, above which the strengthening can be retained. This aspect ratio is sensitive to the allowable strain-rate, the reinforcement radius and the temperature. Predictions are validated by comparison with experimental data obtained for gamma-TiAl reinforced with Ti2AlC-platelets.

引用

页码：2733 / 2738

页数：6

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