Transactions of Materials and Heat Treatment

Title：Study on superplastic behavior of TC2 extrusion tube

Authors： Liu Baosheng Wu Wei Zeng Yuansong Han Xiuquan

Unit： Beijing Aeronautical Manufacturing Technology Research Institute

KeyWords： TC2 superplastic m value activation energy K value

ClassificationCode：

year,vol(issue):pagenumber：2014,39(4):122-125

Abstract：

The superplastic behavior of longitudinal cutting sample for TC2 extrusion tube was investigated at the temperatures of 880 and 920 ℃ and at the strain rates of 1.0×10-4，5.0×10-4，8.0×10-4，2.0×10-3 and 5.0×10-3s-1. According to the sample data, the maximum elongation of 240% was obtained at the condition of 880 ℃ and strain rate 1.0×10-4s-1. Based on equal strain principle and Backofen superplastic constitutive equation, the approach of multiple samples was applied to test the m value. The activation energy Q was also calculated by using Arrhenius equation. Finally, K values at 880 and 920 ℃ were calculated by using slope method and intercept method, and the results of which were close.

Funds：

航空基金资助项目（201211250001）

刘宝胜（1979-），男，博士，工程师

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