DUCTILE PHASE TOUGHENING AND R-CURVE BEHAVIOR IN A B4C-AL CERMET

被引：27

作者：

BHATTACHARYA, AK

PETROVIC, JJ

机构：

[1] Materials Science and Technology Division, Los Alamos National Laboratory, Los Alamos, 87545, NM

来源：

JOURNAL OF MATERIALS SCIENCE | 1992年 / 27卷 / 08期

关键词：

D O I：

10.1007/BF01117938

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The R-curve behaviour of a B4C-Al cermet was studied experimentally using the indentation/strength technique. Microstructural observations clearly indicate that the dominant mechanism contributing towards increasing toughness with crack length is due to bridging of ductile Al phases. It is inferred that ductile toughening, along with toughening due to residual stresses generated upon cooling of the cermet, contribute to this toughening behaviour. Close agreement between experimental results and a simple model is also established.

引用

页码：2205 / 2210

页数：6

共 18 条

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