摘要
针对传统的大塑性变形技术制备超细晶材料存在着生产效率低下、制造成本高等问题,在变通道转角挤压(CCAE)工艺和正挤压工艺(FE)基础上,设计出一套正挤压和变通道转角挤压复合挤压模具。以AZ31镁合金为研究对象,采用Deform-3D软件对该工艺进行数值模拟。模拟结果表明:FE-ECAP复合变形工艺后的累积变形量大于分别进行FE和CCAE两种工艺的累积变形量之和,晶粒尺寸由13.5μm减小到2.66μm,晶粒细化效果显著。
Due to the inefficiency and high-cost of traditional large plastic deformation on the preparation of ultra-fine crystal material,a new kinds of compound deformation combined forward extrusion and change channel angular extrusion(FE-CCAE)mold was designed based on the change channal angular extrusion and forward extrusion(FE).Taking the AZ31 magnesium alloy as the research object,the compound deformation was simulated by Deform 3D software.The numerical simulation results shows that the accumulated deformation of FE-CCAE better than the sum of FE and CCAE,and the grain refining significantly,which decreased from 13.5μm to 2.66μm.
作者
于彦东
李磊
YU Yan-dong;LI Lei(School of Materials Science and Engineering,Harbin University of Science and Technology,Harbin 150040,China)
出处
《哈尔滨理工大学学报》
CAS
北大核心
2018年第5期134-137,共4页
Journal of Harbin University of Science and Technology
基金
黑龙江省自然科学基金重点项目(ZD201202)
关键词
复合挤压
AZ31镁合金
累积变形量
数值模拟
compound deformation
AZ31 magnesium alloy
accumulative defor-mation
numerical simulation
