TENSILE-STRENGTH OF HARDMETALS

被引:12
作者
ROEBUCK, B
机构
[1] Division of Materials Applications, Department of Industry, National Physical Laboratory, Teddington, Middlesex
关键词
D O I
10.1007/BF00611463
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
In conventional bend tests on hardmetal specimens with a rectangular cross-section the strength values exhibit a wide scatter as a result of fracture being initiated from pores and inclusions. A new bend test-piece geometry has been devised which subjects a relatively small volume of material to a high tensile stress and so reduces the probability of fracture starting from defects. The test gives reproducible results with low scatter, and, by suppressing defect initiated failures, it enables a more accurate assessment to be made of the effect of metallurgical variables, such as grain-size and composition, on strength. © 1979 Chapman and Hall Ltd.
引用
收藏
页码:2837 / 2844
页数:8
相关论文
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