固溶温度对Ti6321钛合金组织及显微硬度的影响  

Effect of solid solution temperature on microstructure and microhardness of Ti6321 titanium alloy

作　　者：范丽静 王琳[1,2] 宋雨宸[1] 张宇轩 程焕武 FAN Lijing;WANG Lin;SONG Yuchen;ZHANG Yuxuan;CHENG Huanwu(School of Materials Science and Engineering,Beijing Institute of Technology,Beijing 100081,China;National Key Laboratory of Science and Technology on Materials under Shock and Impact,Beijing Institute of Technology,Beijing 100081,China)

机构地区：[1]北京理工大学材料学院,北京100081 [2]北京理工大学冲击环境材料技术国家级重点实验室,北京100081

出　　处：《中国体视学与图像分析》2024年第1期29-34,共6页Chinese Journal of Stereology and Image Analysis

基　　金：国防基础科研(WDZC2022-4)。

摘　　要：本文对Ti6321板材进行固溶处理,并对固溶处理后的组织进行显微硬度测试。研究了固溶温度对组织形貌及相含量的影响,分析了显微组织与显微硬度的关系。结果表明,随固溶温度升高初生α相含量明显下降,Ti6321钛合金热轧板材的显微组织发生由等轴组织到双态组织,再到魏氏组织的转变;未热处理的Ti6321钛合金显微维氏硬度为317.2HV,随固溶温度升高,显微维氏硬度先增大随后基本保持不变,在固溶温度为900℃时显微维氏硬度达到最大值338.6HV。This paper investigates the influence of solution temperature on the microstructure and phase content of Ti6321 sheet materials by performing solid solution treatments of Ti6321 sheet and conducting microhardness test on the resulting microstructure.The relationship between microstructure and microhardness was analyzed.The results show that,with the increase of solid solution temperature,the microstructure of Ti6321 titanium alloy hot-rolled sheet undergoes a transformation from equiaxed microstructure to duplex microstructure,and then to Widmanstatten microstructure,and the content of primary α phase decreases significantly.The average micro Vickers hardness of the original Ti6321 titanium alloy hot-rolled sheet was 317.2 HV.As the solid solution temperature increases,the micro-Vickers hardness first increases,then remains unchanged,reaching a maximum value of 338.6 HV at a solution temperature of 900℃.

关 键 词：Ti6321钛合金 固溶温度 相含量 显微硬度 

分 类 号：TG146.23[一般工业技术—材料科学与工程]