期刊论文

Wan, X.-J.(yhqwxj@163.com)

中文

材料热处理学报

1009-6264

2012

33

8

110-114

10.13289/j.issn.1009-6264.2012.08.021

国家自然科学基金资助项目（10972190） 湖南省自然科学基金资助项目（09JJ0386）

本校为第一且通讯机构

研究了(Cu_(50)Zr_(50))_(92)Al_8非晶合金在过冷液相区中,经过牛顿流变和非牛顿流变后的等温晶化行为及其对该合金力学性能的影响。结果表明,牛顿型流变对(Cu_(50)Zr_(50))_(92)Al_8非晶合金的结构没有明显的影响;而非牛顿流变对该非晶的显微结构及其等温晶化行为有显著影响:非牛顿流变促进了(Cu_(50)Zr_(50))_(92)Al)_8非晶合金的晶化,其主要晶化相为体心立方结构的CuZr相(B_2相)和CuZr马氏体相;经非牛顿流变及真空热处理试样,在室温压缩过程中,应力诱发了部分B_2相的马氏体相变,从而使其在室温下表现出超弹性,当预塑性应变量为8%时,其总可回复应变为5%左右。

Effects of deformation on isothermal crystallization behavior and mechanical properties of a Cu-based amorphous alloy （ （ Cu50Zr50）92Al8 ） undergoes Newtonian and non-Newtonian plastic deformation in the super cooled liquid region were investigated. The results indicate that the Newtonian deformation has no influence on the microstructure of the amorphous alloy. However, non-Newtonian deformation can promote the isothermal crystallization process of the alloy, The main isothermal crystallization products are the CuZr phase with a cubic stru...