The deformation and microstructure of Ti-3Al-2.5V tubular component for non-uniform temperature hot gas forming

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• 作者：Yong Wu ; Gang Liu ; Kai Wang ; Zhiqiang Liu…
• 关键词：Hot gas forming ; Non ; uniform temperature ; Ti ; alloy tubular part ; EBSD
• 刊名：The International Journal of Advanced Manufacturing Technology
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：88
• 期：5-8
• 页码：2143-2152
• 全文大小：
• 刊物类别：Engineering
• 刊物主题：Industrial and Production Engineering; Media Management; Mechanical Engineering; Computer-Aided Engineering (CAD, CAE) and Design;
• 出版者：Springer London
• ISSN：1433-3015
• 卷排序：88

文摘

In this paper, three 70 % expansion ratio Ti-3Al-2.5V tubular parts were formed by non-uniform temperature hot gas forming with different temperature distributions. The deformation behavior, thickness distribution, microstructure, and mechanical property of tubular parts were studied. The result shows that a suitable temperature difference between forming zone and transition zone is beneficial for axial feeding, which promote the thickness distribution uniform. The number of wrinkles in forming zone is affected by the temperature distribution. There are two wrinkles, one wrinkle, and three wrinkles when the temperature differences are 0, 50, and 15 °C, and the max thinning ratio is 24.9, 24.1, and 18 %, respectively. When the temperature difference is 15 °C, the microstructure and mechanical property is uniform.