NANOSTRUCTURED TRANSFORMATION MECHANISM OF AMORPHOUS FE-B-SI ALLOYS BY THE CRYSTALLIZATION METHOD

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	NANOSTRUCTURED TRANSFORMATION MECHANISM OF AMORPHOUS FE-B-SI ALLOYS BY THE CRYSTALLIZATION METHOD
	H. Y. Tong; B. Z. Ding; H. G. Jiang; S. L. Li; G. S. Li; J. T. Wang
	1994
发表期刊	Journal of Physics D-Applied Physics
ISSN	0022-3727
卷号	27 期号:2 页码:396-401
摘要	In order to obtain extremely fine-grained microstructures by crystallization of the metallic glass, the nucleation and growth processes of the crystalline phases have been investigated over a wide temperature range. Analysis of the transformation kinetics and microstructure has allowed determination of the nucleation and crystal growth rates. The parabolic growth rate increases with annealing temperature, and the nucleation rate based on the homogeneous nucleation theory has shown a maximum at an intermediate temperature range. To a certain extent, quenched-in nuclei influence the crystallized microstructures. In this paper, we have also performed an investigation to determine the effect of quenching rate on the grain size and its distribution. The results indicate that the number of crystals per volume unit formed during isothermal annealing depends not only on annealing time and temperature, but also on the quenching rate, that is the number of quenched-in nuclei of the as-quenched amorphous alloy. The results obtained have shown that it is possible to achieve an extremely fine-grained and well-distributed microstructure by controlling the quenching rate and following crystallization of the metallic glass under suitably chosen annealing conditions.
部门归属	acad sinica,inst met res,state key lab rsa,shenyang 110015,peoples r china.
关键词	Positron-annihilation Spectroscopy Ni-p Alloy Nanocrystalline Materials Grain-boundaries Palladium Fe80b20 Glass
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/38920
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	H. Y. Tong,B. Z. Ding,H. G. Jiang,et al. NANOSTRUCTURED TRANSFORMATION MECHANISM OF AMORPHOUS FE-B-SI ALLOYS BY THE CRYSTALLIZATION METHOD[J]. Journal of Physics D-Applied Physics,1994,27(2):396-401.
APA	H. Y. Tong,B. Z. Ding,H. G. Jiang,S. L. Li,G. S. Li,&J. T. Wang.(1994).NANOSTRUCTURED TRANSFORMATION MECHANISM OF AMORPHOUS FE-B-SI ALLOYS BY THE CRYSTALLIZATION METHOD.Journal of Physics D-Applied Physics,27(2),396-401.
MLA	H. Y. Tong,et al."NANOSTRUCTURED TRANSFORMATION MECHANISM OF AMORPHOUS FE-B-SI ALLOYS BY THE CRYSTALLIZATION METHOD".Journal of Physics D-Applied Physics 27.2(1994):396-401.