摘要
等径角挤压是一种能有效细化材料的微观组织、提高材料综合性能、改善难变形材料成形性的新技术。采用商用有限元软件DEFORM-3D的热力耦合分析技术,对TC4合金的等径角挤压工艺进行了数值模拟。着重探讨了温度、变形速度及润滑条件等工艺参数对挤压过程中坯料温度场的影响。模拟结果表明,在实验条件下,坯料主要变形阶段的变形温度保持在大约600℃,在此温度TC4合金等径角挤压后晶粒细化最佳,为工艺实验的进行提供了科学的依据。
Equal channel angular pressing is an advanced technology that can fine the microstructure of materials and improve the combination properties and processability of materials. The equal channel angular pressing on TC4 alloy was numerically simulated by applying a thermo-mechanical coupled technology with the commercial FEM software DEFORM-3D. The influence of temperature, deforming speed, lubrication, and others on the temperature field of billets was discussed. The simulation results show that the deformation temperature of main deformation stages of billets is about 600℃. At this temperature, after equal channel angular pressing, the grains of TC4 alloy refine best. It offers the scientific reference basis for technological experiments.
出处
《热加工工艺》
CSCD
北大核心
2008年第5期61-63,共3页
Hot Working Technology
关键词
TC4合金
等径角挤压
温度场
有限元模拟
TC4 alloy
equal channel angular pressing
temperature field
finite element simulation
作者简介
陈伟（1977-），男，江西南昌人，在读硕士研究生，研究方向为塑性成形工艺与理论；电话：13870844317；E-mail：chenweiyjs@sina．com
