FRACTURE-BEHAVIOR OF W-NI-FE HEAVY ALLOYS

被引：122
|
作者：
CHURN, KS [1 ]
GERMAN, RM [1 ]
机构：
[1] RENSSELAER POLYTECH INST, DEPT MAT ENGN, TROY, NY 12181 USA
来源：
METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 1984年 / 15卷 / 02期
关键词：
POWDER METALLURGY - Tungsten;
D O I：
10.1007/BF02645119
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The compositions ranged from 93 to 97 wt pct W, with the Ni:Fe ratio maintained at 7:3. Room temperature strength and ductility showed degradation with sintering times in access of two hours. Initial cracking occurs at the tungsten-tungsten grain boundaries and in the tungsten grain. These latter cracks propagate to give eventual failure. The ductility to failure is governed by the strength of the tungsten-matrix interface. The maximum elongation depends on the contiguity which in turn is set by composition.
引用
收藏
页码：331 / 338
页数：8
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