TA15钛合金中板组织与力学性能研究  

Study on Microstructure and Mechanical Properties of TA15 Titanium Alloy Medium Plate

作　　者：张苗 孙梦奇 马佳琨 强刚刚 王乐豪 郭金榜 王勤波[1] Zhang Miao;Sun Mengqi;Ma Jiakun;Qiang Ganggang;Wang Lehao;Guo Jinbang;Wang Qinbo(Baoji Titanium Industry Co.,Ltd.,Baoji 721014,China;Baoti Group Co.,Ltd.,Baoji 721014,China)

机构地区：[1]宝鸡钛业股份有限公司,陕西宝鸡721014 [2]宝钛集团有限公司,陕西宝鸡721014

出　　处：《钛工业进展》2023年第4期40-43,共4页Titanium Industry Progress

摘　　要：采用一次换向+四火次轧制、二次换向+四火次轧制和一次换向+三火次大变形轧制3种工艺制备了厚度10.0mm的TA15钛合金中板,研究了轧制工艺对板材显微组织和力学性能的影响。结果表明:3种TA15钛合金中板显微组织均为α+β两相区加工组织,但采用二次换向+四火次轧制的样品B显微组织中初生α相尺寸最为细小、等轴化程度最高;3种TA15钛合金板材室温和高温力学性能均符合GJB 2505A—2008标准要求,但采用一次换向+三火次大变形轧制的样品C室温和500℃高温抗拉强度横纵向差异最小,500℃高温持久性能最佳。TA15 titanium alloy medium plates with thickness of 10.0 mm were prepared by three kinds of rolling processes,which were once reversing+four heat rolling,twice reversing+four heat rolling and once reversing+three heat large deformation rolling.Then the effect of rolling process on the microstructures and mechanical properties were investigated.The results show that the microstructures of three types of 10.0 mm TA15 titanium alloy medium plates are all processed in theα+βtwo-phase zone,while the primaryαphase of sample B prepared by twice reversing+four heat rolling process is the finest and the most spheroidized.All mechanical properties at room-temperature and high-temperature of three types of TA15 titanium alloy plates meet the standard requirements of GJB 2505A—2008,and the transverse and longitudinal differences of tensile strength at room-temperature and high-temperature of the sample C prepared by once reversing+three heat large deformation rolling process are the smallest,and the stress rupture properties at 500℃are the most excellent.

关 键 词：TA15钛合金 中板 轧制工艺 显微组织 力学性能 

分 类 号：TG337.6[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]