Crystallization kinetics of amorphous solids under pressure

CORC > 金属研究所 > 中国科学院金属研究所

	Crystallization kinetics of amorphous solids under pressure
	F. Ye ; K. Lu
刊名	Physical Review B
	1999
卷号	60 期号:10 页码:7018-7024
关键词	activation volume nanocrystalline state metallic glasses diffusion alloy selenium phase se transformations microstructure
ISSN号	0163-1829
中文摘要	The pressure effect on crystallization kinetics of amorphous solids was investigated by means of thermodynamic analysis. A model was developed to describe the nucleation process under pressure by considering the crystalline/amorphous (c/a) interface that plays a dominant role in the nucleation process. Applying the model to three types of crystallization process, polymorphous (a-Se), primary (Al89La6Ni5), and eutectic (Ni80P20), we found the calculated results can give reasonable explanations for the experimental observations. The calculation suggests that for a-Se and Ni80P20 amorphous alloy, the initial stage of nucleation is a volume expansion process due to the c/a interface formation, resulting in an increase in the nucleation work with an increment of pressure. Hence the crystallization temperature of the amorphous phase rises when a pressure is applied, while for the Al-La-Ni amorphous alloy, the nucleation barrier decreases at higher pressures. The coincidence between the calculation and the experimental results illustrates that the cia interface formation is the governing factor in the crystallization kinetics of the amorphous solids. [S0163-1829(99)03534-1].
原文出处	://WOS:000082777800019
公开日期	2012-04-14
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/37553]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	F. Ye,K. Lu. Crystallization kinetics of amorphous solids under pressure[J]. Physical Review B,1999,60(10):7018-7024.
APA	F. Ye,&K. Lu.(1999).Crystallization kinetics of amorphous solids under pressure.Physical Review B,60(10),7018-7024.
MLA	F. Ye,et al."Crystallization kinetics of amorphous solids under pressure".Physical Review B 60.10(1999):7018-7024.