TiC_(p)/Ti复合材料环件成形数值模拟及实验研究  

Numerical simulation and experimental study of TiC_(p)/Ti composite ring forming

作　　者：郭鹏坤 嵇祥 连启豪 冯弘 韩建超 智少勇 张长江[1,2] GUO Pengkun;JI Xiang;LIAN Qihao;FENG Hong;HAN Jianchao;ZHI Shaoyong;ZHANG Changjiang(College of Materials Science and Engineering,Taiyuan University of Technology,Taiyuan 030024,China;Hai'an Advanced Manufacturing and Intelligent Equipment Industrial Research Institute of TaiyuanUniversity of Technology,Hai'an,Jiangsu 226600,China;Shanxi Zhonggong Heavy Forging Co.,Ltd.,Dingxiang,Shanxi 035404,China)

机构地区：[1]太原理工大学材料科学与工程学院,太原030024 [2]海安太原理工大学先进制造与智能装备产业研究院,江苏海安226600 [3]山西中工重型锻压有限公司,山西定襄035404

出　　处：《内蒙古工业大学学报（自然科学版）》2024年第5期408-416,共9页Journal of Inner Mongolia University of Technology：Natural Science Edition

基　　金：中央引导地方科技发展资金项目(YDZJSX2021A016);海安太原理工大学先进制造与智能装备产业研究院开放研发项目(2023HA-TYUTKFYF033)。

摘　　要：为了研究TiC_(p)/Ti复合材料环件成形能力,采用Deform-3D软件对不同温度预热后的坯料在不同冲孔速度下的环件成形过程进行数值模拟,分析了凸模载荷、最大主应力、金属流动速率和损伤值变化。结果表明,高的预热温度和低的冲孔速度有利于材料成形,综合考虑最终确定1000℃预热和30 mm/s冲孔速度为环件成形的最佳工艺。本研究通过1050℃镦拔锻造制备锻坯和1000℃、30 mm/s下冲孔,成功制备得到了TiC_(p)/Ti复合材料环件,所得环件微观组织比较均匀,由片层α相、等轴α相、残余β相和TiC_(p)构成。TiC_(p)/Ti复合材料环件的室温抗拉强度达1237.08 MPa,延伸率为5.0%,650℃下的抗拉强度达757.35 MPa,延伸率为7.8%,兼具优异的室高温力学性能,可满足航空航天工业对高温钛基材料环件日益增长的性能需求。In order to study the forming ability of TiC_(p)/Ti composite ring parts,Deform-3D was used to numerically simulate the forming process of ring parts under different punching speeds after preheating billets at different temperatures.The deformation load,maximum principal stress,metal flow rate,and damage value were analyzed.The results show that high preheating temperatures and low punching speeds are beneficial to material formation.After comprehensive consideration,1000℃preheating and 30 mm/s punching speed were finally determined to be the best processes for ring forming.In this study,TiC_(p)/Ti composite rings were successfully prepared by forging the blank at 1050℃and punching at 1000℃and 30 mm/s.The microstructure of the ring is homogeneous,consisting of lamellarαphase,equiaxialαphase,residualβphase,and TiC_(p).The tensile strength of the TiC_(p)/Ti composite ring is 1237.08 MPa at the room temperature,and the elongation is 5.0%.The tensile strength and elongation at 650℃are 757.35 MPa and 7.8%,respectively.The TiC_(p)/Ti composite ring has excellent mechanical properties at both room temperature and high temperature,which can meet the increasing performance requirements of high-temperature titanium matrix composite rings in the aerospace industry.

关 键 词：复合材料 环件成形 数值模拟 力学性能 

分 类 号：TG319[金属学及工艺—金属压力加工]