Advanced Search
Volume 28 Issue 5
May  2002
Turn off MathJax
Article Contents
Journal of Beijing University of Aeronautics and Astronautics  > 2002  >  28(5): 540-542.
ZHANG Hu, GAO Wen-li, ZHANG Er-lin, et al. Morphology and Formation Mechanism of Primary TiB2 in TiAlB Alloys[J]. Journal of Beijing University of Aeronautics and Astronautics, 2002, 28(5): 540-542. (in Chinese)
Citation: ZHANG Hu, GAO Wen-li, ZHANG Er-lin, et al. Morphology and Formation Mechanism of Primary TiB2 in TiAlB Alloys[J]. Journal of Beijing University of Aeronautics and Astronautics, 2002, 28(5): 540-542. (in Chinese)
shu

Morphology and Formation Mechanism of Primary TiB2 in TiAlB Alloys

  • 1.

    Beijing University of Aeronautics and Astronautics, Dept. of Materials Science and Engineering

  • 2. Harbin Institute of Technology, School of Materials Science and Engineering

  • Received Date: 15 Jan 2001
  • Publish Date: 31 May 2002
    Abstract
  • Microstructure and phase constitution of Ti-53Al-xBalloys produced by an in-situ growing method were investigated by X-ray diffraction and scanning electron microscope respectively. The results show that these alloys are composed of TiAl and TiB2 phase, while the primary hexagonal prism TiB2 exhibits pyramidal protrusion or rod shape dendrites on its basal facets. The protrusions or rods exhibit facets which parallel to that of the primary TiB2. The solid-liquid interface stability of primary TiB2 was discussed and the formation mechanism of the morphology of primary TiB2 was investigated.

     

    • FullText(HTML)
  • loading
    • References(1)
  • [1] Valencia J J, Lfvander P A, McCullough C, et al. In-situ-grown reinforcements for titanium aluminides[J]. Materials Science and Engineering, 1991,A144:25~36. [2]张 虎,张二林,高文理,等.Ti-40Al-2B合金的微观组织和初生TiB2的生长特征[J].复合材料学报,2001,18(4):46~49. [3]张 虎,高文理,张二林,等. Ti-Al-B合金空心管状初生TiB的生长机制[J]. 复合材料学报,2001,18(4):50~53. [4]McCullough C, Valencia J J, Levi C G, et al. Phase equilibria and solidification in Ti-Al alloys[J]. Acta Metall, 1989, 37:1321~1336. [5]Hyman M E, McCullough C, Valencia J J, et al. Microstructure evolution in TiAl alloys with B additions:conventional solidification[J]. Metall Trans, 1989, 20A:1847~1859. [6]Abdel-Hamid A A, Hamar Thibault S, Hamar R. Crystal morphology of the compound TiB2[J]. Journal of Crystal Growth,1985, 71:744~750. [7]Chernov A A. Stability of faceted shapes[J]. Journal of Crystal Growth, 1974,24/25:11~31.
    • Relative Articles
    • Supplements(0)
    • Cited By
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索
    Get Citation
    PDF
    XML

    Article Metrics

    Article views(2786) PDF downloads(1182) Cited by()
    Proportional views
    Related

    Copyright © Journal of Beijing University of Aeronautics and Astronautics

    Address: Editorial Department of Journal of Beijing University of Aeronautics and Astronautics, 37 Xueyuan Road, Haidian District, Beijing Post Code: 100191 Email: jbuaa@buaa.edu.cn

    Supported by: Beijing Renhe Information Technology Co., Ltd.    

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return