Effects of Heating Temperatures on Hot Spinning of TAl5 Alloy Thin-walled Shell
Titanium alloy thin-walled shells,formed by hot spinning, have been attracting more and more applications, in aerospace, aviation, military and other technical industries,due to its highly forming precision and satisfyingly increasing needs for thinwalled and high strength/weight ratio products. The hot spinning of titanium alloy thin-walled shells is a complex multi-physics problem with multi-factor coupling interactive effects, and the heating temperatures have significant influences on the spinning qualities of workpieces. Therefore,in this study,using a 3D elastic-plastic finite element (FE) model for the hot spinning of TAl5 alloy thin-walled shell,the influence laws of preheating temperature of mandrel and heating temperature of blank on forming qualities are revealed. The results show that: preheating temperature of mandrel and heating temperature of blank have significant influence on maximum tangential tensile stress. With the increasing of preheating temperature of mandrel and heating temperature of blank, the tangential tensile stress first decreases then increases The reasonable preheating temperature and the heating temperature are about 400℃ and 750℃ , respectively. Finally, the satisfied workpieces are obtained with the above parameters. The results may provide a theoretical guide for the determination and optimization of forming temperature of relative spinning process.
Titanium alloy thin-walled shell hot spinning coupled thermal-mechanical heating temperature preheating temperature
Mei Zhan Tian Li He Yang Qiaoling Wang Hu Li
State Key Laboratory of Solidification Processing,School of Materials Science and Engineering,Northwestern Polytechnical University,P. O. Box 520,XVan 710072,China
国际会议
The 12th World Conference Titanium(第十二届世界钛会 Ti-2011)
北京
英文
1783-1786
2011-06-19（万方平台首次上网日期，不代表论文的发表时间）