| 脉冲电流辅助SUS304极薄带拉伸变形研究 |
| |
| 引用本文： | 范婉婉,刘奇,刘文文,王涛,王天翔. 脉冲电流辅助SUS304极薄带拉伸变形研究[J]. 中国机械工程, 2023, 34(4): 475-480+489. DOI: 10.3969/j.issn.1004-132X.2023.04.012 |
| |
| 作者姓名： | 范婉婉 刘奇 刘文文 王涛 王天翔 |
| |
| 作者单位： | 1.太原理工大学机械与运载工程学院，太原，0300242.太原理工大学先进成形与智能装备研究院，太原，0300243.山西太钢不锈钢精密带钢有限公司，太原，030024 |
| |
| 基金项目： | 国家自然科学基金（51974196）；山西省重点研发项目（201903D421047）；山西省科技重大专项（20181102015）；山西省研究生教育创新项目（2021Y166）；创新型人才国际合作培养项目（CXXM20200144） |
| |
| 摘 要： | 为了研究脉冲电流对SUS304极薄带拉伸变形的影响，进行了室温拉伸、通电拉伸以及通电空冷拉伸试验，分析了热效应和非热效应对宏观力学性能与微观组织的影响。结果表明，脉冲电流辅助SUS304极薄带拉伸变形过程中热效应和非热效应同时存在，热效应导致材料流变应力减小，非热效应抑制TRIP效应，促进TWIP效应，改变了材料的塑性变形机制；没有高强度马氏体协调塑性变形，导致试样过早发生失稳断裂，其中试样的抗拉强度降低12.2%,断裂延伸率下降44.7%;同时，非热效应使试样在较低温度下发生了回复和再结晶现象；脉冲电流诱导了SUS304极薄带由韧性断裂向韧脆性断裂模式的转变，并且促进了变形织构生成。
|
| 关 键 词： | 电流辅助加工 SUS304极薄带 拉伸变形 TRIP效应 |
Research on Pulse Current-assisted Tensile Deformation of SUS304 Ultra-thin Strips |
| |
| FAN Wanwan,LIU Qi,LIU Wenwen,WANG Tao,WANG Tianxiang. Research on Pulse Current-assisted Tensile Deformation of SUS304 Ultra-thin Strips[J]. China Mechanical Engineering, 2023, 34(4): 475-480+489. DOI: 10.3969/j.issn.1004-132X.2023.04.012 |
| |
| Authors: | FAN Wanwan LIU Qi LIU Wenwen WANG Tao WANG Tianxiang |
| |
| Affiliation: | 1.College of Mechanical and Vehicle Engineering，Taiyuan University of Technology，Taiyuan，0300242.Advanced Forming and Intelligent Equipment Research Institute，Taiyuan University of Technology，Taiyuan，0300243.Shanxi Taigang Stainless Steel Precision Strip Co.，Ltd.，Taiyuan，030024 |
| |
| Abstract: | To study the effects of pulse current on the tensile deformations of SUS304 ultra-thin strips， room temperature tensile， electric tensile and electric air-cooled tensile tests were carried out. The effects of thermal effect and non-thermal effect on the macro-mechanics properties and microstructure were analyzed. The results show that thermal effect and non-thermal effect exist simultaneously in the processes of pulse current-assisted tensile deformation of SUS304 ultra-thin strips， and the thermal effect leads to the reduction of flow stress. The non-thermal effect restrains the TRIP effect， promotes the TWIP effect and changes the plastic deformation mechanism of the SUS304 ultra-thin strips. There is no coordinated plastic deformation of high-strength martensite， which leads to the premature plastic instability of samples， where the tensile strength of the sample decreases by 12.2% and the elongation at break decreases by 44.7%. The non-thermal effect makes the strip recover and recrystallize at a lower temperature. The pulse current induces the transition of SUS304 ultra-thin strips from ductile fracture to ductile-brittle fracture mode， and promotes the formation of deformed texture. |
| |
| Keywords: | electrically-assisted forming SUS304 ultra-thin strip tensile deformation TRIP effect |
|
| 点击此处可从《中国机械工程》浏览原始摘要信息 |
|
点击此处可从《中国机械工程》下载免费的PDF全文 |
