Investigation on the factors influencing the thickness distribution of superplastic-formed components  

作　　者：高重阳 方攸同 

机构地区：[1]School of Mechanical Engineering and Energy Zhejiang University [2]School of Electrical Engineering Zhejiang University

出　　处：《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》2005年第7期711-715,共5页浙江大学学报（英文版）A辑（应用物理与工程）

基　　金：Project supported by the National Natural Science Foundation of China (No. 50477030), and the Scientific Research Foundation for ROCS, State Education Ministry, China

摘　　要：In the superplastic sheet forming process, the uniformity of the sheet's final thickness distribution is vital for ensuring the good mechanical quality of the formed components. The influences of the component shape and the contact friction on the final thickness distribution were investigated in this work by using finite element method on a series of axisymmetric models. It was concluded that shape optimization and friction elimination are required to get uniform thickness distribution, and eventually to improve the mechanical quality of the formed components. The constitutive equation of the Ti-6A1-4V superplastic material was also determined on the basis of experimental data.In the superplastic sheet forming process, the uniformity of the sheet＇s final thickness distribution is vital for ensuring the good mechanical quality of the formed components. The influences of the component shape and the contact friction on the final thickness distribution were investigated in this work by using finite element method on a series of axisymmetric models. It was concluded that shape optimization and friction elimination are required to get uniform thickness distribution, and eventually to improve the mechanical quality of the formed components. The constitutive equation of the Ti-6A1-4V superplastic material was also determined on the basis of experimental data.

关 键 词：Thickness distribution Component shape Contact friction SPF TI-6A1-4V 

分 类 号：TG306[金属学及工艺—金属压力加工]