A coherent polycrystal model for the inverse Hall-Petch relation in nanocrystalline materials

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	A coherent polycrystal model for the inverse Hall-Petch relation in nanocrystalline materials
	H. W. Song; S. R. Guo; Z. Q. Hu
	1999
发表期刊	Nanostructured Materials
ISSN	0965-9773
卷号	11 期号:2 页码:203-210
摘要	A coherent polycrystal model for the abnormal grain size dependence is presented. It treats the nanocrystalline material as a coherent precipitate strengthened two-phase alloy in which all the grain boundaries merge into a whole continuous matrix acid each of the grains embeds in the matrix coherently. According to this model, the transition from the normal to the inverse Hall-Fetch relation corresponds to thr role-exchange of the grain bulk and the grain boundary in the deforming mechanism. Theoretical formula based on this model is compared with the available experimental data. Thr results indicate that the model gives an excellent description of the so-called inverse Hall-Petch relation in the nanocrystalline materials. (C) 1999 Acta Metallurgica Inc.
部门归属	acad sinica, inst met res, state key lab rsa, shenyang 110015, peoples r china.;song, hw (reprint author), acad sinica, inst met res, state key lab rsa, 72 wenhua rd, shenyang 110015, peoples r china
关键词	Grain-size Mechanical-behavior Microhardness Strength Alloys Cu Pd Metals Nickel Silver
URL	查看原文
WOS记录号	WOS:000081172200006
引用统计	被引频次：105[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/37485
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	H. W. Song,S. R. Guo,Z. Q. Hu. A coherent polycrystal model for the inverse Hall-Petch relation in nanocrystalline materials[J]. Nanostructured Materials,1999,11(2):203-210.
APA	H. W. Song,S. R. Guo,&Z. Q. Hu.(1999).A coherent polycrystal model for the inverse Hall-Petch relation in nanocrystalline materials.Nanostructured Materials,11(2),203-210.
MLA	H. W. Song,et al."A coherent polycrystal model for the inverse Hall-Petch relation in nanocrystalline materials".Nanostructured Materials 11.2(1999):203-210.