Vickers-indentation-induced crystallization in a metallic glass

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	Vickers-indentation-induced crystallization in a metallic glass
	Z. J.; Hu Yan, Y.; Song, K. K.; Dai, F. P.; He, J.; Eckert, J.
	2015
发表期刊	Applied Physics Letters
ISSN	0003-6951
卷号	106 期号:10
摘要	Crystallization preferentially occurs on the compressive sides of some metallic glasses due to bending, implying that stress state is a critical factor affecting the mechanically induced crystallization. However, the role of stress state in mechanically induced crystallization in metallic glasses is poorly understood. Here, we report on the crystallization kinetics in different deformed regions during Vickers indentation of Zr65Al7.5Ni10Cu12.5Ag5 metallic glass. Our results indicate that the nucleation rate beneath the indenter tip is much higher than that under an indenter edge. It is revealed that the nucleation rate I (m(-3) s(-1)) and the effective compressive stress P (MPa) follow an expression I = exp(3.81 + 0.044 P), which agrees well with our experimental results. Our findings reduce the role of stress state in mechanically induced crystallization in metallic glasses, which is helpful in understanding the mechanism of mechanically induced crystallization. (C) 2015 AIP Publishing LLC.
部门归属	[yan, zhijie ; hu, yong] taiyuan univ sci & technol, sch mat sci & engn, taiyuan 030024, peoples r china. [yan, zhijie ; song, kaikai ; dai, fuping ; he, jie ; eckert, juergen] ifw dresden, inst komplexe mat, d-01069 dresden, germany. [song, kaikai ; dai, fuping] northwestern polytech univ, xian 710072, peoples r china. [he, jie] chinese acad sci, inst met res, shenyang 110016, peoples r china. [eckert, juergen] tech univ dresden, inst werkstoffwissensch, d-01062 dresden, germany. ; yan, zj (reprint author), taiyuan univ sci & technol, sch mat sci & engn, taiyuan 030024, peoples r china. ; ifwzjyan@gmail.com
关键词	Induced Nanocrystal Formation Bulk Amorphous-alloys Numerical-simulation Supercooled Liquids Room-temperature Deformation Microstructure Composites Al90fe5gd5 Plasticity
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/73995
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Z. J.,Hu Yan, Y.,Song, K. K.,et al. Vickers-indentation-induced crystallization in a metallic glass[J]. Applied Physics Letters,2015,106(10).
APA	Z. J.,Hu Yan, Y.,Song, K. K.,Dai, F. P.,He, J.,&Eckert, J..(2015).Vickers-indentation-induced crystallization in a metallic glass.Applied Physics Letters,106(10).
MLA	Z. J.,et al."Vickers-indentation-induced crystallization in a metallic glass".Applied Physics Letters 106.10(2015).