MECHANISM OF FRACTURE OF DISPERSION-STRENGTHENED TUNGSTEN

被引：0
|
作者：
MILMAN, YV
OLSHANSKII, AB
GRIDNEVA, IV
KORZHOVA, NP
CHUGUNOVA, SI
机构：
[1] Acad of Sciences of the Ukrainian, SSR, USSR, Acad of Sciences of the Ukrainian SSR, USSR
来源：
SOVIET POWDER METALLURGY AND METAL CERAMICS | 1986年 / 25卷 / 07期
关键词：
POWDER METALLURGY - Tungsten - TUNGSTEN METALLOGRAPHY - Microstructures;
D O I：
暂无
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The authors compare the mechanical properties and fracture mechanisms of unalloyed tungsten and dispersion-strengthened tungsten (W - Y//2O//3 - HfO//2) in the temperature range 20-2750 degree C. In the temperature range 500-1200 degree C, fracture has a partially tough character involving quasibrittle lamination along the boundaries of grains and subgrains elongated during working. At temperatures of 1200 degree C and higher, tough transgranular fracture is observed, which is succeeded by tough intergranular fracture at 1800 degree C.
引用
收藏
页码：557 / 560
页数：4
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