重离子辐照诱发TiNiCu合金非晶化的原位电子显微研究

材料研究学报, 2003, 17(2): 210-213. doi: 10.3321/j.issn:1005-3093.2003.02.017

重离子辐照诱发TiNiCu合金非晶化的原位电子显微研究

祖小涛 ^1, , 朱莎 ^2, , 张传飞 ^3, , 王鲁闽 ^4,

1.电子科技大学

2.Department of Nuclear Engineering and Radiological Sciences,University of Michigan,Ann Arbor,Michigan 48109

3.中国工程物理研究院核物理与化学研究所

4.Department of Nuclear Engineering and Radiological Sciences,University of Michigan,Ann Arbor,Michigan 48109

基金项目: 国家自然科学基金(10175042) 海外杰出青年科学基金(19928510)

关键词：金属材料 , TiNiCu形状记忆合金 , 重离子辐照 , 原位电子显微观察

Ion irradiation-induced amorphization of TiNiCu shape memory alloy

在美国Argonne国家实验室连接有IVEM-Tandem National Facility加速器的Hi-tatch3000电子显微镜上,通过400 KeV Xe+离子就位辐照研究了TiNiCu形状记忆合金的常温晶态-非晶态转变.入射的Xe离子通过级联碰撞,从0.05 dpa开始辐照诱发TiNiCu合金化学无序,非晶化过程和化学无序几乎同时进行;0.2 dpa后,马氏体变体的衬度明显减小,变得非常模糊;在0.4dpa非晶化转变完成,马氏体变体的衬度完全消失.

参考文献

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