J. Mater. Sci. Technol. ›› 2010, Vol. 26 ›› Issue (2): 177-180.

• Research Articles • 上一篇    下一篇

Zr55Al10Cu30Ni5大块金属玻璃室温轧制变形后的晶化行为

胡勇1;李金富2;张朋娜1;周尧和1   

  1. 1. 上海交通大学材料科学与工程学院
    2. 上海交通大学
  • 收稿日期:2008-06-24 修回日期:2009-03-03 出版日期:2010-02-28 发布日期:2010-02-28
  • 通讯作者: 李金富
  • 基金资助:

    国家自然科学基金;国家自然科学基金磁场作用下高介电常数纳米有机表面膜的成膜机理研究;国家自然科学基金;国家自然科学基金;国家自然科学基金磁场作用下高介电常数纳米有机表面膜的成膜机理研究;国家自然科学基金;国家自然科学基金

Crystallization Behavior of Zr55Al10Cu30Ni5 Bulk Metallic Glass Rolled at Room Temperature

Yong Hu1,2), Jinfu Li1), Pengna Zhang1), Yaohe Zhou1)   

  1. 1) State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
    2) School of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China
  • Received:2008-06-24 Revised:2009-03-03 Online:2010-02-28 Published:2010-02-28
  • Contact: Jinfu LI
  • Supported by:

    the National Natural Science Foundation of China (Grant No. 50671066)

摘要:

采用双辊轧机对Zr55Al10Cu30Ni5大块金属玻璃在室温下进行轧制变形,最大变形量为95%,研究了组织和热稳定性与变形量之间的关系。结果表明,在轧制过程中没有出现相转变,但是随着变形量的增加,晶化峰的劈裂越来越明显。径向分布函数和双体分布函数的分析结果表明,晶化峰的劈裂与短程有序的强化有关。

关键词: 金属玻璃, 塑性变形, 热稳定性

Abstract:

Zr55Al10Cu30Ni5 bulk metallic glass was rolled up to 95% in thickness reduction at room temperature, and the dependences of microstructure and thermal stability on the strain were investigated. It is revealed that phase transformations do not occur during the rolling, but the split of the crystallization peaks becomes more and more obvious with increasing thickness reduction. Analyses of the radial distribution functions and the pair correlation functions indicate that the rolling has enhanced the short-range order, which should be responsible for the enlarging split of the crystallization peaks.

Key words: Metallic glass, Plastic deformation, Microstructure, Thermal stability