HIGH-TEMPERATURE DEFORMATION OF NB3AL ALLOYS

被引：21

作者：

HANADA, S

MURAYAMA, Y

ABE, Y

机构：

[1] Institute for Materials Research Tohoku University, Sendai

来源：

INTERMETALLICS | 1994年 / 2卷 / 03期

关键词：

NB3AL; HIGH TEMPERATURE DEFORMATION; YIELD STRENGTH; DISLOCATION; PLANAR FAULT;

D O I：

10.1016/0966-9795(94)90054-X

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The behaviour of binary Nb3Al alloys as high-temperature structural materials is reviewed with regard to deformation of single phase Nb3Al and Nb3Al/Nb(ss) (niobium solid solution) composites fabricated by various processes. Single-phase Nb3Al, which exists at 1873 K in the composition range between 21 and 23 mol% Al, possesses an extremely high yield strength at high temperatures with the activation of a[100] dislocations on {001} planes, although it is very brittle below 1500 K. Fine distribution of Nb(ss) in Nb3Al improves the fracture toughness and decreases the high temperature strength. The trends of Nb3Al alloy development will be discussed.

引用

页码：155 / 165

页数：11

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