钛合金板材反向粘性介质压力胀形及性能研究  

Study on reverse viscous medium pressure bulging and performance fortitanium alloy sheet

作　　者：杨朋飞 王璋 陈元琨 高铁军[1] Yang Pengfei;Wang Zhang;Chen Yuankun;Gao Tiejun(College of Aerospace Engineering,Shenyang Aerospace University,Shenyang 110136,China;AECC Harbin Dongan Engine Co.,Ltd.,Harbin 150060,China)

机构地区：[1]沈阳航空航天大学航空宇航学院,辽宁沈阳110136 [2]中国航发哈尔滨东安发动机有限公司,黑龙江哈尔滨150060

出　　处：《锻压技术》2024年第3期34-39,共6页Forging & Stamping Technology

基　　金：国家自然科学基金资助项目(52075347);辽宁省高等学校基本科研面上项目(LJKZ0192)。

摘　　要：针对钛合金板材室温下塑性变形能力差的问题,采用实验和有限元分析相结合的方法,进行了反向粘性介质压力胀形研究,借助粘性介质性能及反向压力改善板材的受力状态和变形规律,提高钛合金板材胀形性能及成形极限。首先,进行了钛合金板材半球形凸模反向粘性介质压力胀形过程分析,得到了不同反向粘性介质压力试件的等效应力及壁厚的分布规律;在此基础上,通过不同椭圆度凸模反向粘性介质压力胀形研究,分析了试件复杂程度与反向粘性介质压力胀形质量及性能的关系,并通过应变网格法构建了不同反向粘性介质压力条件下的成形极限图。研究结果可为钛合金板材反向粘性介质压力成形工艺参数的确定提供重要参考。Aiming at the poor plastic deformation ability of titanium alloy sheet at room temperature,the reverse viscous medium pressure bulging was studied by combining experiment and finite element analysis,and with the help of viscous medium performance and reverse pressure,the stress state and deformation law of sheet were improved to improve the bulging performance and forming limit of titanium alloy sheet.In the research process,the reverse viscous medium pressure bulging process of titanium alloy sheet with hemispherical punch was analyzed,and the distribution laws of equivalent stress and wall thickness of different reverse viscous medium pressure specimens were obtained.On this basis,the relationship between the complexity of specimen and the quality and performance of reverse viscous medium pressure bulging was analyzed by the study of reverse viscous medium pressure bulging with different ellipticity punches,and the forming limit diagram under different reverse viscous medium pressure conditions was constructed by strain grid method.The research results provide an important reference for determining the process parameters of reverse viscous medium pressure forming of titanium alloy sheets.

关 键 词：钛合金 反向粘性介质压力胀形 胀形性能 椭圆度 成形极限 

分 类 号：TG302[金属学及工艺—金属压力加工]