摘要
采用数值模拟方法研究了高强耐热镁合金多向转接头的等温锻造过程,分析了导套形状、锻造方案对构件成形过程中金属流动行为的影响,根据模拟结果制定了圆形导套、两次下压的成形方案,并采用此方案成功锻造出高强耐热镁合金多向转接头模锻件。对该锻件进行了时效热处理工艺研究,得出最优化的时效处理制度为200℃×63 h。在该时效制度下,材料的室温抗拉强度达到了411 MPa,屈服强度达到331 MPa,延伸率达7.3%。
The isothermal forming process of multi-transfer-device has been studied by numerical simulation and experiment. Aecroding to the simulation results, the effects of guide sleeve shape and forming programme on metal flowing behavior is analized and the cylinder guide sleeve and two steps forming programme are cho- sen. After isothermal forming, the product was heat treated at 200 ℃×63 h. The fracture strength reaches 411 MPa, the yield strength reaches 331 MPa and the elongation reaches 7.3%.
出处
《材料科学与工艺》
EI
CAS
CSCD
北大核心
2013年第4期123-126,共4页
Materials Science and Technology
基金
国防基础科研计划资助项目(A0320110003)
关键词
镁合金
等温成形
时效处理
力学性能
有限元
magnisum alloy
isothermal forming
aging treatment
mechanical property
finite element
