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Laminated Nb/Nb3Al composites:: effect of layer thickness on fatigue and fracture behavior

被引：25
作者：
Bloyer, DR
Rao, KTV
Ritchie, RO [1 ]
机构：
[1] Univ Calif Berkeley, Dept Mat Sci & Mineral Engn, Berkeley, CA 94720 USA
[2] Guidant Corp, Adv Cardiovasc Syst, Santa Clara, CA 95052 USA
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 1997年 / 240卷
关键词：
fracture; fatigue; R-curve; intermetallic; Nb; Nb3Al; laminates;
D O I：
10.1016/S0921-5093(97)00608-4
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Fracture and fatigue crack growth properties of coarse scale Nb/Nb3Al laminated composites are examined, and their performance is contrasted with similarly reinforced in situ particulate and microlaminate composites. It is found that laminate orientation has a larger effect on fatigue crack growth resistance than on fracture toughness; properties are optimal in the crack arrester as compared with the crack divider orientation. In addition, thicker Nb layers yield improved fracture and fatigue crack growth properties; and the effect is more prominent in the divider orientation. Mechanisms underlying this behavior are briefly described. (C) 1997 Elsevier Science S.A.
引用
收藏
页码：393 / 398
页数：6
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