摘要
设计并制造触变挤压模具,进行了高固相率半固态AZ61镁合金触变挤压和常规挤压实验,研究了不同成形工艺参数对变形力的影响。结果表明,在触变挤压变形时,挤压温度越高,变形力越小;挤压速度越快,变形力越大。采用建立的半固态AZ61镁合金的本构关系,对半固态AZ61触变挤压成形进行了数值模拟,通过对触变挤压实验和数值模拟结果的对比可知,二者拟合的较好。
The thixo-extrusion die was designed and made. The influence of different process parameters on the deformation force was studied by thixo-extrusion experiments and routine extrusion experiments on AZ61 alloy. The results show that the thixo-extrusion deformation force decreases with the increase of extrusion temperature; the deformation rate increases with the increase of extrusion force. Using the constitutive relationship of semi-solid AZ61 alloy,the thixo-forming of semi-solid AZ61 alloy were simulated. Contrasted the thixo-extrusion experiment results and the simulation results, it is found that they coincide well.
出处
《热加工工艺》
CSCD
北大核心
2009年第19期73-75,共3页
Hot Working Technology
基金
国家自然科学基金项目(50765005)
江西省科技厅资助项目(2007GZC1826)
江西省教育厅资助项目(JGG09011)
作者简介
周冰锋（1979-），男，江西萍乡人，博士研究生，从事半固态成形工艺和理论研究、材料加工过程计算机模拟方向的研究；电话：13807910889；E—mail：missor35@Yahoo．com．cn
