TC4钛合金鼓筒锻件锻造模拟及组织预测  

Forging Simulation and Microstructure Prediction for Spool Forging of TC4 Titanium Alloy

作　　者：朱旭晖 朱崇伟 欧文超 邓雨亭 刘东[3] Zhu Xuhui;Zhu Chongwei;Ou Wenchao;Deng Yuting;Liu Dong(AECC Shenyang Engine Research Institute,Shenyang 110015,China;AECC Beijing Institute of Aeronautical Materials,Beijing 100095,China;School of Materials,Northwestern Polytechnical University,Xi’an 710072,China)

机构地区：[1]中国航发沈阳发动机研究所,辽宁沈阳110015 [2]中国航发北京航空材料研究院,北京100095 [3]西北工业大学材料学院,陕西西安710072

出　　处：《钛工业进展》2024年第2期1-5,共5页Titanium Industry Progress

基　　金：国家重大专项资助项目(JPEC-F203110)。

摘　　要：采用刚塑性有限元方法和DEFORM-2D软件对TC4钛合金鼓筒锻件锻造过程和等轴初生α相的分布情况进行数值模拟,比较对击锤锻造和液压机锻造2种工艺下的温度场及应变分布情况。模拟结果表明:对击锤锻造易产生类似切削的缺陷,通过设计合适的坯料内侧倾角可以显著改善缺陷形成;液压机锻造成形后的锻件温度分布、应变分布和组织均较为均匀,不易产生锻造缺陷,是TC4钛合金鼓筒锻件成形的较优方式。液压机锻造的TC4钛合金锻件中等轴初生α相含量由心部到边缘逐渐增大,经组织验证,其等轴初生α相分布基本符合模拟云图。Rigid-plastic finite element method and DEFORM-2D software were employed to simulate the forging process and distribution of primary equiaxialαphase of TC4 titanium alloy spool forging.The distribution of temperature field and the strain under two forging processes of hammer forging and press forging were compared.The simulation results show that it is easy to produce defects similar to cutting by hammer forging which can be solved through setting appropriate medial inclination of billet.The press forging is the better process of spool forging because of the relatively uniform distribution of temperature,effective strain,microstructure and the low risk of forging defects.The content of primary equiaxialαphase increases from edge to core of TC4 titanium alloy forging and the distribution basically conforms to the simulation by verification of microstructure.

关 键 词：TC4钛合金 鼓筒锻件 锻造模拟 组织预测 

分 类 号：TG316[金属学及工艺—金属压力加工] TG146.23[一般工业技术—材料科学与工程]