氧含量对原位合成(TiB+La2O3)/Ti复合材料力学性能的影响
Effect of Oxygen Content on Mechanical Properties of In-Situ Synthesized (TiB+La2O3)/Ti Composite
摘 要
采用真空自耗电弧炉熔炼技术, 利用钛与LaB6之间的反应原位合成了具有不同氧含量的(TiB+La2O3)/Ti复合材料;分析了复合材料的物相组成、增强体形貌以及显微组织, 测试了复合材料的室温、高温拉伸性能以及热稳定性。结果表明: 较高氧含量的复合材料室温下强度及塑性都较低, 但在高温下尤其是700 ℃时具有较高的抗拉强度;在650 ℃保温100 h后, 含氧量对其强度影响不大, 但高氧含量的塑性较低。
氧含量
显微组织
力学性能
titanium matrix composite
oxygen content
microstructure
mechanical property
Abstract
The composites (TiB+La2O3)/Ti (TMCs) with different oxygen contents were synthesized by in-situ reaction between Ti and LaB6 using vacuum consumable electrode arc furnace melting technique; the phases, reinforcements morphology and microstructure of composites were analyzed; the tensile properties at room and high temperatures, as well as the thermal stability of the composites were also tested. The results show that the TMCs with higher oxygen contents had lower strength and plasticity at room temperature, while the composite had higher tensile strength at high temperatures, especially at 700 ℃; oxygen contents had little effect on strength after heat at 650 ℃ for 100 h, but the ductility of the composite with high oxygen contents was lower.
中图分类号 TB331
所属栏目
基金项目 国家“973”计划资助项目(2007CB613806); 国家自然科学基金资助项目(50871066); 上海市科技启明星(跟踪)计划项目(09H1401400)
收稿日期 2010/6/15
修改稿日期 2010/10/18
网络出版日期
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备注吕健(1985-), 女, 山东济宁人, 硕士研究生。
引用该论文: LV Jian,WANG Li-qiang,QIN Ji-ning,LV Wei-jie,ZHANG Di. Effect of Oxygen Content on Mechanical Properties of In-Situ Synthesized (TiB+La2O3)/Ti Composite[J]. Materials for mechancial engineering, 2011, 35(6): 61～64
吕健,王立强,覃继宁,吕维洁,张荻. 氧含量对原位合成(TiB+La2O3)/Ti复合材料力学性能的影响[J]. 机械工程材料, 2011, 35(6): 61～64
被引情况:
【1】邝玮,王敏敏,李九霄,韩远飞,黄光法,吕维洁,张荻, "原位自生(TiB+La2O3)/TC4钛基复合材料的显微组织和力学性能",机械工程材料 39, 67-72(2015)
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【6】YANG Z F, LU W J, QIN J N, et al. Microstructural characterization of Nd2O3 in situ synthesized multiple-reinforced (TiB + TiC +Nd2O3)/Ti composites[J].Alloys Comd, 2006, 425:379-383.
【7】XIAO L, LU W J, YANG Z F. Effect of reinforcements on high temperature mechanical properties of in situ synthesized titanium matrix composites[J].Mater Sci Eng A, 2008, 491:192-198.
【8】SRINADH K V S, SINGH V. Oxidation behaviour of the near α-titanium alloy IMI 834[J].Bulletin of Materials Science, 2004, 27(4):347-354.
【9】LU W, ZHANG D, ZHANG X, et al. Microstructural characterization of TiC in in situ synthesized titanium matrix compo-sites prepared by common casting technique[J].Alloys Compd, 2001, 327(1/2):248-252.
【10】LVTJERING G. Influence of processing on microstructure and mechanical properties of (α+β) titanium alloys[J].Materials Science and Engineering A, 1998, 243(1/2):32-45.
【11】吕维洁, 肖旅, 覃继宁, 等.原位合成多元增强耐热钛基复合材料[J].稀有金属材料与工程, 2008, 37(3): 107-110.
【12】LVTJERING G, WEISSMANN S. Mechanical properties of age-hardened titanium-aluminum alloys[J].Acta Metallurgica, 1970, 18(7):785-795.
【13】DONLON W T, ALLISON J E, LASECKI J V. The influence of thermal exposure on properties and microstructure of elevated temperature titanium alloy[C]//Titanium 92′ Science and Technology. USA: The Minerals, Metals & Materials Society, 1993:259-302.
【14】ROSENBERGH W. The science, technology & application of titanium[M].Oxford: Pergamon Press, 1970.
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