拉伸变形应变硬化指数的理论和实验规范

金属学报

2006, Vol. 42

Issue (7): 673-680

论文

本期目录 | 过刊浏览

拉伸变形应变硬化指数的理论和实验规范

宋玉泉;管志平;马品奎;宋家旺

吉林大学超塑性与塑性研究所; 长春130025

theoretical and experimental standardization of strain hardening index in tensile deformation

SONG Yuquan; GUAN Zhiping; MA Pinkui; SONG Jiawang

Superplastic and Plastic Research Institute; Jilin University; Changchun 130025

引用本文:

宋玉泉; 管志平; 马品奎; 宋家旺 . 拉伸变形应变硬化指数的理论和实验规范[J]. 金属学报, 2006, 42(7): 673-680 .
, , , . theoretical and experimental standardization of strain hardening index in tensile deformation[J]. Acta Metall Sin, 2006, 42(7): 673-680 .

全文: PDF(693 KB)

摘要: 本文从应力为应变和应变速率函数的状态方程出发，导出了超塑性拉伸变形的微分本构方程，从而解释了方程中应变硬化指数的力学涵义。导出了应变硬化指数的约束方程，定义了典型变形路径的应变硬化指数，导出了它们之间的相互关系。导出了典型变形路径应变硬化指数的测量公式和数值模拟的精确测量方法，以此为依据对应变硬化指数进行了实验测量，对测量方法和测量结果进行了精细分析。研究结果判明：应变硬化指数，不仅不是常数，而且随应变的变化规律与变形路径有密切的联系；不仅与变形路径有密切关系，而且与所用的测量公式有密切关系。因此，在引用应变硬化指数时，应该标明所对应的变形路径；在测量应变硬化指数时，应采用所对应变形路径的测量公式。

关键词 ：超塑性, 应变硬化指数, 力学解析, 实验测量

Abstract：Based on state equation that stress is a function of strain and strain-rate, the differential constitutive equation during superplastic tensile deformation is deduced, and then the mechanical meaning of strain hardening index in the equation is interpreted. The constraint equation of strain hardening index is deduced, strain hardening indexes in typical deformation paths are defined, and their interrelations are gotten. Measuring formulae of strain hardening indexes in typical deformation paths and accurate measuring methods by numerical simulation are deduced. According to them, strain hardening indexes are experimentally measured, and measuring methods & results are elaborately analyzed. The results prove that: not only does strain hardening index be non-constant, but also has close relations with the changing rule of strain and deformation path; not only does strain hardening index have close relations with deformation path, but also with adopted measuring formula. Therefore, as strain hardening index is quoted, its corresponding deformation path should be shown clearly; when strain hardening index is measured, the measuring formula of its corresponding deformation path should be adopted.

Key words： superplasticity strain hardening index mechanical analysis experimental measure

收稿日期: 2006-03-02

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[1] Ludwik P. Phys Z, 1909; 10: 411
[2] Hollomon J H. Trans ASM, 1944; 32: 123
[3] Song Y Q, Suo Z L,Guan Z P, Liu Y. Acta Metall Sin, 2006; 42: 337 (宋玉泉,索忠林,管志平,刘颖．金属学报,2006;42:337)
[4] Song Y Q. J Jilin Univ Technol, 1985; (1): 13 (宋玉泉．吉林工业大学学报,1985;(1):13)
[5] Song Y Q. J Jilin Univ Technol, 1992; 22(1): 1 (宋玉泉．吉林工业大学学报, 1992;22(1):1)
[6] Song Y Q, Cheng Y C, Liu Y. Sci Chin, 2001; 44 E: 113
[7] Song Y Q, Hai J T, Guan Z P. Sci Chin, 2001; 44 E: 561
[8] Song Y Q, Cheng Y C, Wang X W. Sci Chin, 2001; 44 E:365
[9] Song Y Q, Cheng Y C. Chin Pat, ZL 00 1 17802.4 (宋玉泉,程永春．中国发明专利ZL 00 1 17802．4)
[10] Song Y Q, Cheng Y C, Hou L. Chin Mech Eng, 1999; 10: 782 (宋玉泉,程永春,侯磊．中国机械工程, 1999;10:782)

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