热氢处理对 (TiB, TiC)/Ti1100复合材料显微组织和相变点的影响
Effect of Thermohydrogen Treatment on Microstructure and Transformation Temperature of (TiB, TiC)/Ti1100 Composites
摘 要
对原位反应制备的(TiB, TiC)/Ti1100 复合材料进行了热氢处理, 用XRD 对不同氢含量复合材料进行了物相分析, 用光学显微镜研究了氢元素的加入对复合材料显微组织的影响, 并测定了相变温度。结果表明: 随着氢含量的增加, α-Ti和β-Ti相的衍射峰有向低角度偏移的趋势, 晶界处逐渐析出氢化物, 复合材料的相变温度逐渐下降, 并且基体钛合金的晶粒有所细化。
热氢处理
显微组织
Ti-based composite
thermohydrogen treatment
microstructure
Abstract
The thermohydrogen treatment on (TiB, TiC)/Ti1100 composites fabricated by in situ reaction was studied. The phase analysis was carried out on the composites with different hydrogen contents by XRD, and the effect of hydrogen on the microstructure of the composites was investigated with optical microscopy. Besides, the transformation temperature was detected. The results indicate that with increasing the hydrogen concentration, the diffractive peaks of α-Ti and β-Ti phase deflected to the low angle and hydride precipitated on grain boundaries gradually. The transformation temperature of the composites declined and grains of the substrate Ti alloy defined slightly.
中图分类号 TG146.1
所属栏目
基金项目 国家自然科学基金资助项目(10577013)
收稿日期 2010/8/22
修改稿日期 2011/2/1
网络出版日期
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备注孙拴利(1985-), 男, 山西忻州人, 硕士研究生。
引用该论文: SUN Shuan-li,LV Wei-jie,LU Jun-qiang,WANG Li-qiang,ZHANG Di. Effect of Thermohydrogen Treatment on Microstructure and Transformation Temperature of (TiB, TiC)/Ti1100 Composites[J]. Materials for mechancial engineering, 2011, 35(9): 18～21
孙拴利,吕维洁,卢俊强,王立强,张荻. 热氢处理对 (TiB, TiC)/Ti1100复合材料显微组织和相变点的影响[J]. 机械工程材料, 2011, 35(9): 18～21
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参考文献
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【2】LU W J, ZHANG D, ZHANG X N, et al. Microstructural characterization of TiB in in situ synthesized titanium matrix composites prepared by common casting technique[J]. Journal of Alloys and Compounds,2001,327:240-247.
【3】MAITY P C, PANIGRAHI S C. Metal and intermetallic matix in situ particle composites[J]. Key Eng Mater,1995,108/110:313-386.
【4】EUNSUB Y, KYUHONG L, SUNGHAK L. Improvement of high-temperature hardness of (TiC, TiB)/Ti-6Al-4V surface composites fabricated by high-energy electron-beam irradiation[J]. Surface and Coatings Technology,2004,184:74-83.
【5】RADHAKNSHNABHAT B V, SUBRAMANYAM J, BHANUPRASAD V V. Preparation of Ti-TiB-TiC & Ti-TiB composites by in-situ reaction hot pressing[J]. Materials Science and Engineering A,2002,325:126-130.
【6】LU J Q, QIN J N, LU W J, et al. Effect of hydrogen on microstructure and high temperature deformation of (TiB+TiC)/Ti-6Al-4V composite[J]. Materials Science and Engineering A,2009,500:1-7.
【7】ZHANG C B, KANG Q, LAI Z H. The microstructure modification, lattice and mechanical properties of hydrogenated/ dehydrogenated alpha Ti[J]. Acta Mater,1996,44:1077-1083.
【8】LIN T H, CHANG R Q, XU G Q, et al. A Mossbauer study on atomic interaction of hydrogen in a β-titanium alloy[J]. Scr Metall,1989,23:885-890.
【9】LU W J, ZHANG D, WU R J, et al. Solidification paths and reinforcement morphologies in melt-processed(TiB-TiC) in situ composites[J]. Metallurgical and Materials Transactions A,2002,33:3055-3064.
【10】崔昌军, 彭乔.钛及钛合金的氢渗过程研究[J].稀有金属材料与工程,2003,32(12):1011-1014.
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