固溶时效处理对TC11钛合金显微组织和硬度的影响  

Effect of solution treatment and aging on microstructure and hardness of TC11 titanium alloy

作　　者：朱宁远[1] 陈世豪 廖强 陈秋明 赖文坤 左寿彬 Zhu Ningyuan;Chen Shihao;Liao Qiang;Chen Qiuming;Lai Wenkun;Zuo Shoubin(School of Mechanical and Electrical Engineering,Jiangxi University of Science and Technology,Ganzhou Jiangxi 341000,China;Ganzhou Research Institute of Agricultural Sciences,Ganzhou Jiangxi 341000,China)

机构地区：[1]江西理工大学机电工程学院,江西赣州341000 [2]赣州市农业科学研究所,江西赣州341000

出　　处：《金属热处理》2022年第12期62-66,共5页Heat Treatment of Metals

基　　金：国家自然科学基金(51905241);江西省自然科学基金(20202BABL214033);江西省教育厅青年基金(GJJ170560)。

摘　　要：研究了在相同时效处理制度下,不同的固溶温度、固溶时间对粗锻态TC11钛合金棒材显微组织和显微硬度的影响。结果表明,对TC11钛合金在相变点以下进行固溶处理时,随着固溶温度的升高,等轴初生α相的含量增多;当固溶温度接近相变点时,等轴初生α相的含量迅速减少;当固溶温度为950℃时,随着固溶时间的增加,晶界α相开始长大,片状α相转变为块状α相与等轴α相的混合组织;当固溶时间一定时,TC11钛合金的硬度随着固溶温度的升高呈现出先下降然后逐渐趋于稳定的趋势;在固溶温度为950℃,固溶时间为120 min时的硬度达到最高。Effects of solution temperature and solution time on microstructure and microhardness of TC11 titanium alloy bar under the same aging treatment processes were studied.The results show that when the TC11 titanium alloy is solution treated below the phase transition point,the content of equiaxed primaryαphase increases with the increase of solution temperature.When the solution temperature approaches the phase transition point,the content of equiaxed primaryαphase decreases rapidly.When the solution temperature is 950℃,with the increase of solution time,the grain boundaryαphase begins to grow,and the lamellarαphase turns into the mixed microstructure of bulkαphase and equiaxedαphase.When the solution time is fixed,the hardness of the TC11 titanium alloy decreases first and then tends to be stable with the increase of solution temperature.The hardness reaches the maximum value when solution temperature is 950℃and solution time is 120 min.

关 键 词：TC11钛合金 热处理 固溶温度 固溶时间 显微组织 硬度 

分 类 号：TG166.5[金属学及工艺—热处理]