Modeling creep behavior of niobium silicide in-situ composites
Modeling creep behavior of niobium silicide in-situ composites
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DOI：
10.1016/s0921-5093(02)00011-4
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发表时间：
2002-11-25
期刊：
影响因子：
6.4
通讯作者：
Chan, KS
中科院分区：
文献类型：
--
作者：
Chan, KS
金属基复合材料的蠕变模型已扩展到处理蠕变基体中含有硅化物的铌基原位复合材料的蠕变。模型计算表明，原位复合材料的蠕变指数受到较强增强体（硅化物或 Laves）相蠕变行为的显着影响，在 Nb Ti-Hf-Si 原位复合材料中观察到的大范围蠕变指数（I-II）可以根据原位复合材料蠕变过程中硅化物（或 Laves）相的刚性或蠕变行为来解释。结合蠕变模型在设计铌基原位复合材料抗蠕变微观结构中的应用进行了讨论。合金添加和 Peierls-Nabarro 应力对原位复合材料抗蠕变性的影响，(C) 2002 Elsevier Science B.V. 保留所有权利。
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.