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

页码：557 / 560

页数：4