热处理制度对TB2钛合金带材力学性能及显微组织的影响  

Effect of Heat Treatment on Microstructures and Mechanical Properties of TB2 Alloy Strip

作　　者：倪沛彤[1] 韩明臣[1] 朱梅生[1] 张英明[1] 

机构地区：[1]西北有色金属研究院,陕西西安710016

出　　处：《钛工业进展》2012年第6期19-21,共3页Titanium Industry Progress

摘　　要：研究了固溶处理温度、冷却方式及时效处理温度对0.8 mm厚TB2钛合金带材显微组织及力学性能的影响。结果表明:固溶处理时,冷却方式对TB2钛合金带材的力学性能影响较大,真空水淬与真空气淬均能得到较高的综合力学性能,但从可操作性来看,应采用真空气淬的方式冷却;TB2钛合金带材的较佳固溶处理温度为800℃,经800℃×12 min真空气淬固溶处理后,可获得较高的强度和延伸率;TB2钛合金带材的较佳时效处理温度为480℃,经480℃×8 h/FC时效处理后,其抗拉强度可达1 250 MPa以上,延伸率达到18%以上,组织中的等轴β晶粒内均匀分布着细小的α相。In this paper, the effects of solution temperature, cooling method and aging temperature on microstructure and mechanical properties for 0. 8 mm thick TB2 alloy strip were investigated. The results show that cooling method has major impact on mechanical properties of TB2 alloy strip, which has better performance after vacuum gas or water quenching. But vacuum water quenching is hard to operate. The optimal solution and aging temperature are 800 ℃and 480℃ respectively. After 800 ℃- 12 rain solution treatment and vacuum gas quenching, the material has higher strength and elongation. After 480 ℃ × 8 h/FC aging treatment, tensile strength and elongation are over 1 250 MPa and 18%. Small α phase is distributed uniformly in equiaxed β grains.

关 键 词：TB2带材 热处理 显微组织 力学性能 

分 类 号：TG166.5[金属学及工艺—热处理]