铝合金汽车中间轴螺塞半固态触变模锻研究  

Research on Semi-solid Thixo-forging of Aluminum Alloy Automobile Intermediate Shaft Plug

作　　者：梅楹煜[1] 陈国香[1] 闫洪[1] 徐晨[1] 

机构地区：[1]南昌大学先进成形制造及模具研究所,江西南昌330031

出　　处：《热加工工艺》2007年第21期59-62,共4页Hot Working Technology

基　　金：国家自然科学基金资助项目(50465003);江西省教育厅资助项目(Z03486)

摘　　要：对Y112铝合金进行半固态触变模锻实验,确定了该试验最优的半固态二次加热工艺参数。研究表明,模锻后零件中的晶粒基本保持了半固态成形前坯料的颗粒状,说明在触变成形过程中坯料的流动方式是以液相包裹着固相颗粒的方式进行的。并将数值模拟数据与实验成形力曲线比较,结果二者数值和变化趋势基本吻合,说明数值模拟能够为分析整个锻造过程提供有效的依据,能够从结果中获得较为符合实际的材料流动规律和塑性行为。Y 112 aluminum alloy thixo-forging experiment in semi-solid state was carried out. The optimized reheating process parameters were determined in the experiment. The research shows that the grains of parts after thixo-forging basically keep spherical grains before semi-solid thixo-forming, the fluxion form of blank in thixo-forming is the way that liquid wraps up solid. The numerical simulation data and forming resistance curve in experiment are compared. The changing trend of the numerical value of simulation is agreed with that of experiment. The numerical simulation provides a valid gist to analyze entire forging process, the fluxion regulation and plastic behavier matching actual state are acquired.

关 键 词：半固态 触变模锻 数值模拟 

分 类 号：TG316[金属学及工艺—金属压力加工]