王金辉,金培鹏,张瑞,崔闯

• 1:青海大学新型轻合金重点实验室
• 2:青海省轻金属合金及深加工工程技术研究中心

摘要(Abstract)：

研究了蠕变温度与蠕变应力载荷对SiCp/Al复合材料高温蠕变行为的影响,分析了该复合材料的蠕变断裂机制,并计算得出了材料的应力指数与激活能。结果表明:蠕变速率随蠕变应力荷载的增大和蠕变温度的升高而增大,应力指数与变形激活能分别为n=9.8和Q=182 k J/mol。该复合材料的蠕变断裂机制为韧性断裂。通过对比得出,SiCp/Al复合材料的抗高温蠕变性能明显优于基体材料。

关键词(KeyWords)： 蠕变温度;蠕变应力载荷;高温蠕变;蠕变断裂机制

Abstract:

Keywords:

基金项目(Foundation): 青海省科技项目(2015-Z-Y08,2014-ZJ-709)

作者(Author): 王金辉,金培鹏,张瑞,崔闯

DOI: 10.13289/j.issn.1009-6264.2017.01.003

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