摘要
采用Deform-3D有限元模拟软件,研究120°模具下1060铝合金室温多道次ECAP变形行为,并在自行设计的ECAP模具上进行实验验证,研究变形后材料组织性能变化规律。结果表明,ECAP变形过程中,坯料在转角处发生剧烈塑性剪切变形,材料经1道次变形后内部形成稳定均匀变形区域,累积应变量约为0.613。随着挤压道次的增加,累积应变量不断增大,2道次后挤压载荷逐渐趋于饱和,变形也更加均匀。4道次变形后,材料内部累积应变高达2.628,晶粒发生明显的细化和破碎,晶界变得模糊不清;1060铝合金显微硬度由原始退火态30.42 HV增加至54.50 HV,增幅高达79.2%,力学性能得到大幅提升。
The Deform-3 D finite element simulation software has been used to study the Emulti-pass CAP deformation behavior of 1060 aluminum alloy at room temperature under a 120° die, and conduct experimental verification on the self-designed ECAP die, while the change law in the structure and properties of the material after deformation has been studied. The results show that during the ECAP deformation process,the blank undergoes severe plastic shear deformation at the corners, and the material forms a stable and uniform deformation area after one pass of deformation, while the cumulative strain is about 0.613. As the number of extrusion passes increases, the cumulative strain increases. After two passes, the extrusion load gradually becomes saturated and the deformation becomes more uniform. After four passes of deformation, the accumulated strain inside the material is as high as 2.628, the grains are obviously refined and broken, and the grain boundaries become blurred;the micro-hardness of 1060 aluminum alloy increases from 30.42 HV in the original annealed state to 54.50 HV with an increase up to 79.2%. The mechanical properties have been greatly improved.
作者
袁峻池
王晓溪
张翔
高源洋
井新宇
黄晓晴
YUAN Junchi;WANG Xiaoxi;ZHANG Xiang;GAO Yuanyang;JING Xinyu;HUANG Xiaoqing(School of Mechanical and Electrical Engineering,Xuzhou University of Technology,Xuzhou 221018,Jiangsu China;Jiangsu XCMG Research Institute Co.,Ltd.,Xuzhou 221004,Jiangsu China;State Key Laboratory of Intelligent Manufacturing of High-end Construction Machinery,Xuzhou 221004,Jiangsu China)
出处
《锻压装备与制造技术》
2021年第6期121-126,共6页
China Metalforming Equipment & Manufacturing Technology
基金
国家自然科学基金青年科学基金项目(51905462)
江苏省自然科学基金面上项目(BK20201150)
江苏省“六大人才高峰”高层次人才选拔培养资助项目(GDZB-127)
江苏省2021年大学生创新训练计划项目(202111998045Y)。
关键词
ECAP
有限元模拟
挤压道次
组织性能
ECAP
Finite element simulation
Extrusion pass
Structure and performance
作者简介
袁峻池(2000-),男,主要研究方向为金属材料塑性成形工艺及模具设计。E-mail:20000312@163.com;通信作者:王晓溪(1985-),女,博士,副教授,主要研究方向为先进塑性成形工艺及理论、高性能轻合金制备及形性调控。E-mail:WXX19851109@sina.com。
