Microstructure Evolution of Zr50Cu18Ni17Al10Ti5 Bulk Metallic Glass during Cold-rolling

材料科学技术（英）, 2012, 28(8): 756-760.

Microstructure Evolution of Zr50Cu18Ni17Al10Ti5 Bulk Metallic Glass during Cold-rolling

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1.School of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China

2.School of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China

3.School of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China

4.School of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China

5.School of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China

基金项目: the Natural Science Foundation of Shanxi Province, China(. 2011021020-1 and 2012021018-3) Acknowledgements This work was supported by the National Natural Science Foundation of China(50804032) the Postgraduate Technology Innovation Project of Taiyuan University of Science and Technology, China(20111002)

关键词：大块金属玻璃 , 组织演变 , 冷轧过程 , 透射电子显微镜 , 微观结构 , FWHM , 原子结构 , 高分辨率

Microstructure Evolution of Zr50Cu18Ni17Al10Ti5 Bulk Metallic Glass during Cold-rolling

Keywords： Metallic glasses , Cold-rolling , Microstructure ,

Zr5018Nil1AlTi10Ti5 bulk metallic glass has been rolled at room temperature up to 95% in thickness reduction, and the dependence of microstructure on the strain was investigated. With increasing thickness reduction, the full width at half maximum （FWHM） and crystallization enthalpy decrease gradually till 80%, and then increase evidently at 95%. It is revealed that the reversible transition between the ordered and disordered atomic configurations was found in the metallic glass as the deformation proceeds, which is further verified by the high-resolution transmission electron microscopy images. The final microstructure in metallic glass during cold-rolling is the net result of two competing processes between shear-induced disordering and diffusion controlled reordering.

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Microstructure Evolution of Zr50Cu18Ni17Al10Ti5 Bulk Metallic Glass during Cold-rolling

Microstructure Evolution of Zr50Cu18Ni17Al10Ti5 Bulk Metallic Glass during Cold-rolling

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