Shape Optimization of Initial Billet for TA15 Ti-Alloy Complex Components Preforming

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• 作者：Wenjing  ; Zhou  ; Zhichao  ; Sun  ; ;   ; ^{zcsun@nwpu.edu.cn} ; Shupeng  ; Zuo ; He  ; Yang ; Xiaoguang  ; Fan
• 关键词：optimization of initial billet ; TA15 Ti-alloy ; preforming ; complex components ; FE simulation
• 刊名：Rare Metal Materials and Engineering
• 出版年：2011
• 出版时间：June 2011
• 年：2011
• 卷：40
• 期：6
• 页码：951-956
• 全文大小：650 K

文摘

A finite element (FE) model of preforming process of TA15 Ti-alloy complex components has been established based on DEFORM-3D platform. Combined with the experiments, the preforming process and typical forming defects have been analyzed. An excellent preform with good macroscopical forming quality, uniform and fine microstructure has been fabricated using an optimized billet with the proper initial shape, which is acquired by a systematic stepwise reverse optimization method, effectively avoiding the defects of underfilling and folding in the preforming process. The preforming experiment was carried out based on the optimized initial billet and the result of optimization has been verified which is reasonable and reliable.