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文章名
A new method of characterizing equivalent strain for equal channel angular processing

作者
ZHAO Jun(赵  军), WANG Zhen-hua(王振华), SUN Shu-hua(孙淑华),
ZHAO De-li(赵德利), REN Li-guo(任利国), FU Wan-tang(傅万堂)
单位
1. State Key Laboratory of Metastable Materials Science and Technology, Yanshan University,
Qinhuangdao 066004, China;
2. College of Materials Science and Engineering, Yanshan University, Qinhuangdao 066004, China;
3. North China Institute of Aerospace Engineering, Langfang 065000, China)

Abstract: In order to establish the quantitative  relationship between equivalent strain and the performance index of the deformed
material within the range of certain passes for equal channel angular processing (ECAP), a new approach to characterize the
equivalent strain was proposed. The results show that there exists better accordance between mechanical property (such as hardness
or strength) and equivalent strain after  rolling and ECAP in a certain range of deformation amount, and Gauss equation can be
satisfied among the equivalent strain and the mechanical properties for ECAP. Through regression analysis on the data of hardness
and strength after the deformation, a more generalized expression of equivalent strain for ECAP is proposed as: ε=k0exp[−(k1M−k2)2],
where M is the strength or hardness of the material, k1 is the modified coefficient (k1 (0, ∈  1)), k0and k2 are two parameters dependent on the critical strain and mechanical property that reaches saturation state for the material, respectively. In this expression the equivalent strain for ECAP is characterized novelly through the mechanical parameter relating to material property rather than  the classical geometry equation.

Key words: equal channel angular processing (ECAP); equivalent strain; mechanical property; characterizing method

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xiaogounihao(金币+1):谢谢 2010-06-09 12:58:04
zjys5887(金币+20):谢谢帮助，祝您工作顺利。 2010-06-09 14:10:35

已被SCI&EI检索
SCI:
标题: A new method of characterizing equivalent strain for equal channel angular processing
作者: Zhao, J; Wang, ZH; Sun, SH, et al.
来源出版物: JOURNAL OF CENTRAL SOUTH UNIVERSITY OF TECHNOLOGY 卷: 16 期: 3 页: 349-353 出版年: 2009
被引频次: 0
IDS 号: 455RJ
ISSN: 1005-9784
DOI: 10.1007/s11771-009-0059-6

EI:
A new method of characterizing equivalent strain for equal channel angular processing
Zhao, Jun (State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China); Wang, Zhen-Hua; Sun, Shu-Hua; Zhao, De-Li; Ren, Li-Guo; Fu, Wan-Tang Source: Journal of Central South University of Technology (English Edition), v 16, n 3, p 349-353, June 2009
Database: Compendex

DOI: 10.1007/s11771-009-0059-6
Database: Compendex

[ Last edited by truewz on 2010-6-9 at 12:24 ]