Modeling creep behavior of niobium silicide in-situ composites

被引：36
作者：
Chan, KS [1 ]
机构：
[1] SW Res Inst, San Antonio, TX 78228 USA
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2002年 / 337卷 / 1-2期
关键词：
creep modeling; creep-resistant microstructure; niobium silicides; in-situ composites; Nb-Ti-Hf-Si alloys;
D O I：
10.1016/S0921-5093(02)00011-4
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A creep model for metal-matrix composites has been extended to treat creep in Nb-based in-situ composites containing silicides in a creeping matrix. Model calculations revealed that the creep exponent of the in-situ composites is significantly influenced by the creep behavior of the stronger reinforcement (silicide or Laves) phase, The wide range of creep exponent (I-II) observed in Nb Ti-Hf-Si in-situ composites can be explained on the basis of the rigid or creeping behavior of the silicide (or Laves) phase during creep in the in-situ composites. The application of the creep model to designing creep-resistant microstructure for Nb-based in-situ composites is discussed in conj. unction with the roles of alloy addition and Peierls-Nabarro stress in influencing the creep resistance of the in-situ composites, (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：59 / 66
页数：8
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