摘要
微成形技术在成形过程中,韧性断裂是经常出现的主要缺陷之一,极大地影响了微型零件的成形质量。在微介观尺度的变形过程中,由于尺寸效应的影响,传统的塑性变形以及韧性断裂理论不能完全应用于微介观尺度下金属材料的成形预测,尺寸效应对微介观尺度塑性变形和韧性断裂行为有着显著的影响。对当前微介观尺度下的塑性变形及断裂理论进行了综述,阐述了尺寸效应对材料性能的影响,总结了微介观尺度下的材料塑性本构模型和韧性断裂准则,最后展望了微介观尺度下韧性断裂准则研究中仍存在的挑战。
Ductile fracture is one of the main defects that often occur during the microforming process,which greatly affects the forming quality of micro components. During the micro/meso deformation process,due to size effects,the traditional plastic deformation and ductile fracture theory cannot be completely applied to predict the forming of metal material in micro-meso scale. The size effects have a significant effect on plastic deformation and ductile fracture behavior in micro/meso scale. The current plastic deformation and fracture theory in micro-meso scale were reviewed,the effect of the size effect on material properties was described,and the plastic constitutive model and ductile fracture criterion of material in micro-meso scale were summarized. Finally,outstanding issues of ductile fracture criteria in micromeso scale scales were addressed.
作者
肖志菲
郭树标
荆传智
冉家琪
王继来
XIAO Zhi-fei;GUO Shu-biao;JING Chuan-zhi;RAN Jia-qi;WANG Ji-lai(Key Laboratory of High Efficient and Clean Machinery Manufacturing of the Ministry of Education,School of Mechanical Engineering,Shandong University,Jinan 250061,China;School of Electrical and Control Engineering,Shenzhen University,Shenzhen 518060,China)
出处
《塑性工程学报》
CAS
CSCD
北大核心
2021年第4期9-23,共15页
Journal of Plasticity Engineering
基金
国家自然科学基金资助项目(51705333)
中国博士后面上项目(2018M632672)
广东省自然科学基金博士启动项目(2017A030310352)
深圳市基础研究(自由探索)项目(JCYJ20170818104529523)
山东省自然科学基金资助项目(ZR2019BEE062)
山东大学青年学者未来计划项目。
关键词
微成形
尺寸效应
本构模型
韧性断裂
microforming
size effect
constitutive model
ductile fracture
作者简介
第一作者:肖志菲,男,1996年生,硕士研究生,主要从事微观尺度下韧性断裂研究,E-mail:1170688896@qq.com;通信作者:王继来,男,1986年生,博士,副研究员,主要从事金属材料微成形、韧性断裂研究,E-mail:jlwang@sdii.edu.cn。
