塑性工程学报

2023, 06, v.30 88-101

电流辅助成形中位错演化行为研究进展

肖志涛^1,2,3 皇涛^1,2,3

邢兵辉^1,2,3 陈拂晓^1,2,3 宋克兴^1,4,5 郭俊卿^1,2,3 张彦敏^1,2,3

1.河南科技大学材料科学与工程学院 2.河南省有色金属材料科学与加工技术重点实验室 3.有色金属新材料与先进加工技术省部共建协同创新中心 4.河南省科学院 5.河南省先进导体材料重点实验室

基金项目(Foundation): 国家自然科学基金资助项目（51875176; 52175314）;; 河南省自然科学基金优秀青年基金资助项目（202300410122）

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摘要：

电流辅助成形技术融合了电能、热能和变形能，耦合了多物理场作用。在电热力耦合作用下产生的焦耳热效应和非热效应对材料力学性能和微观组织产生多重影响。相较于传统成形工艺，其在提高材料成形潜力和提升构件成形质量等方面具有优势。从实验研究、理论模型解析以及有限元分析等方面综述了电辅助成形过程中电流对位错演变的作用规律，讨论分析了基于位错密度的电辅助理论解析模型研究进展，对电流辅助成形过程中位错演变研究现状进行了梳理，为进一步研究电辅助塑性成形提供一定的参考。

关键词： 电辅助成形; 微观组织; 位错; 本构模型;

Abstract：

Electrically assisted forming technology combines electrical energy, thermal energy and deformation energy, couplings multi-physical field effects. Joule thermal effect and non-thermal effect generated by electro-thermal-mechanical coupling have multiple effects on mechanical properties and microstructure of materials. Compared with traditional forming process, it has advantages in improving the forming potential of materials and improving the forming quality of components. The effect laws of current on dislocation evolution in the process of electrically assisted forming were reviewed from the aspects of experimental research, theoretical model analysis and finite element analysis. The research progress of electrically assisted theoretical analytical model based on dislocation density was discussed and analyzed. The research status of dislocation evolution in the process of electrically assisted forming was sorted out, which provides a reference for further research on electrically assisted plastic forming.

KeyWords： electrically assisted forming; microstructure; dislocation; constitutive model;

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基本信息:

中图分类号:TG14;TG661

引用信息:

[1]肖志涛,皇涛,邢兵辉,等.电流辅助成形中位错演化行为研究进展[J],2023,30(06):88-101.

基金信息:

国家自然科学基金资助项目（51875176; 52175314）;; 河南省自然科学基金优秀青年基金资助项目（202300410122）

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