Transactions of Materials and Heat Treatment

Title：Experiment and simulation investigation on superplastic forming process of a TA15 titanium alloy deep cavity shaped part

Authors： Wang Yuelin Huang Xuanzhao Li Xiaoqiang Li Dongsheng Guo Guiqiang

Unit： Shenyang Aircraft Corporation Beihang University

KeyWords： superplastic forming deep cavity part simulation fittability thinning rate

ClassificationCode：V261.7

year,vol(issue):pagenumber：2015,40(9):37-42

Abstract：

The superplastic forming process of TA15 titanium alloy deep cavity part at 945 ℃ was carried out by software PAM-STAMP, and then the optimized pressure-time curve and the thickness distribution were obtained. Furthermore, the die of the deep cavity part was designed. The superplastic forming experiment of the part was done based on pressure-time curve obtained from simulation. Then, point cloud data of the practical part contour was obtained by a three dimensional scanning device and its thickness distribution was measured by an ultrasonic thickness meter. The shapes and thickness distributions obtained from simulation and experiment were compared. The results show that the contour error between the simulation and experiment is less than 0.6 mm. The two kinds of thickness distributions have the same trend. The max error is 17.98% and the max thickness reduction is 64.3%, which meet the design requirement. The accuracy of the calculated model is verified.

Funds：

国家科技重大专项“高档数控机床与基础制造装备”（2013ZX04001-041）

王月林（1982- ），男，硕士，工程师;通讯作者：李小强（1979- ），男，博士，副教授

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