热处理制度对Ti-1023钛合金微观组织及力学性能的影响  

Effect of heat treatment on microstructure and mechanical properties of Ti-1023 titanium alloy

作　　者：蒋小娟 杨刚 詹正阳 程小伟 董梦瑶 邓国勇 孙涛 孙朝远 Jiang Xiaojuan;Yang Gang;Zhan Zhengyang;Cheng Xiaowei;Dong Mengyao;Deng Guoyong;Sun Tao;Sun Chaoyuan(School of Mechanical Engineering,Chongqing Industry Polytechnic College,Chongqing 401120,China;Chengdu Advanced Metal Material Research Institute Co.,Ltd.,Chengdu Sichuan 610300,China;School of Materials Science and Engineering,Chongqing University,Chongqing 400044,China;China National Erzhong Group Deyang Wahang Die Forging Co.,Ltd.,Deyang Sichuan 618000,China)

机构地区：[1]重庆工业职业技术学院机械工程学院,重庆401120 [2]成都先进金属材料产业技术研究院股份有限公司,四川成都610300 [3]重庆大学材料科学与工程学院,重庆400044 [4]中国第二重型机械集团德阳万航模锻有限责任公司,四川德阳618000

出　　处：《金属热处理》2023年第12期116-122,共7页Heat Treatment of Metals

基　　金：重庆市教育委员会科学技术研究计划青年项目(KJQN202203209,KJQN202203216);重庆市自然科学基金面上项目(No.cstc2021jcyj-msxmX1112)。

摘　　要：利用热处理工艺炉、力学性能试验机、X射线衍射仪等试验设备,研究了固溶、时效和冷却速度对Ti-1023合金的显微结构和力学性能的影响。结果表明,采用单一固溶处理,固溶温度略高于相变点温度时,初生α_(P)相消失,β晶粒缓慢长大,合金强度和硬度提高;该合金经固溶水冷处理后,由于冷却速度快,形成少量的α相与均匀粗大的β相共同形成网篮组织,合金强度和硬度提高;当时效时间为1 h时,时效过程形成的次生α_(S)相会产生第二相强化作用,表现出显著的弥散强化效果,合金强度和硬度升高。Effects of solution treatment,aging and cooling rate on the microstructure and mechanical properties of Ti-1023 alloy were studied by using heat treatment furnace,mechanical performance testing machine and X-ray diffractometer.The results show that when the solution treatment temperature is slightly higher than transition temperature,the primaryα_(P) phase disappears withβgrain growing slowly,and the strength and hardness of the alloy increase.The alloy is water quenched after solution treatment,due to the fast cooling rate,a small amount ofαphase and the uniform thickβphase form the basket-weave structure,and the strength and hardness are improved.When the aging time is 1 h,the secondaryα_(S) formed during the aging process produces the second phase strengthening effect,which shows significant dispersion strengthening effect and increases the strength and hardness of the alloy.

关 键 词：TI-1023钛合金 固溶时效 显微组织 力学性能 XRD 

分 类 号：TG166.5[金属学及工艺—热处理]