TC11钛合金4种典型组织静态力学性能对比研究

发布时间：2018-01-05 14:15

本文关键词：TC11钛合金4种典型组织静态力学性能对比研究　出处：《云南大学学报(自然科学版)》2016年01期 　论文类型：期刊论文

【摘要】：采用4种热处理工艺制备了等轴、双态、网篮、固溶时效4种不同组织的TC11钛合金棒材,并采用MTS万能材料试验机测试其室温准静态拉伸性能,研究了不同的热处理制度对其微观结构和力学性能的影响.结果表明:不同的热处理工艺,将得到不同的微观组织,在不同的显微组织结构中,等轴(球状)初生α相和β转变组织的含量以及β转变组织中次生α相的形貌明显不同;4种不同组织形貌的TC11钛合金的静态力学性能有显著的差异,在4个组织中,固溶时效组织和双态组织强度较高,但塑性却较差,等轴组织和网篮组织塑性较好,但强度则较低.
[Abstract]:TC11 titanium alloy bars with four different structures were prepared by four heat treatment processes: equiaxed, double state, net basket and solution aging. The quasi-static tensile properties at room temperature were tested by MTS universal material testing machine. The effects of different heat treatment systems on microstructure and mechanical properties were studied. The results show that different heat treatment processes will result in different microstructure in different microstructure. The contents of primary 伪 phase and 尾 transition tissue and the morphology of secondary 伪 phase in 尾 transition tissue are obviously different from those in equiaxed (spherical) phase. The static mechanical properties of four kinds of TC11 titanium alloys with different morphologies were significantly different. In the four microstructures, the strength of the solution aged microstructure and the two-state microstructure were higher, but the plasticity was poor. The isometric structure and the basket structure are more plastic, but the strength is lower.
【作者单位】：楚雄师范学院材料制备及力学行为研究所;
【基金】：国家自然科学基金(51561002) 云南省应用基础研究计划项目(2011FZ185) 国家级项目孵化楚雄师范学院校级立项课题
【分类号】：TG166.5;TG146.23
【正文快照】： 钛合金因其密度小,比强度高,耐腐蚀,导热能力低等优点,成为航空航天、国防等尖端领域所需轻质结构材料的优良备选材料.TC11是一种α+β型双相钛合金[1-2],其名义成分为Ti-6.5Al-3.5Mo-1.5Zr-0.25Si,该合金具有优良的热强度和抗蠕变性能,兼具优良的综合力学性能,是目前我国航空

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