J. Mater. Sci. Technol. ›› 2010, Vol. 26 ›› Issue (11): 1047-1050.

• Research Articles • 上一篇    下一篇

Microstructure investigation on the triple junction with an adjoining twin boundary in nanocrystalline palladium

王雨晨1,苏振兴2,Ping De-Hai3   

  1. 1. Institute of Metal Research, Chinese Academy of Sciences
    2. 中国科学院金属研究所沈阳材料科学国家（联合）实验室
    3. Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences
  • 收稿日期:2010-01-08 修回日期:2010-04-23 出版日期:2010-11-30 发布日期:2010-11-22
  • 通讯作者: 王雨晨
  • 基金资助:

    国家重点基础研究发展计划 (973)

Microstructure Investigation on the Triple Junction with an Adjoining Twin Boundary in Nanocrystalline Palladium

Yuchen Wang, Zhenxing Su, Dehai Ping   

  1. Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
  • Received:2010-01-08 Revised:2010-04-23 Online:2010-11-30 Published:2010-11-22
  • Contact: Yuchen Wang
  • Supported by:

    the National Natural Science Foundation of China (No. 51071149) and the National Basic Research Program of China (No. 2006CB605103).

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关键词: triple junction, grain boundary, molecular statics, HRTEM

Abstract: By using high-resolution transmission electron microscopy, a [¹110] triple junction (TJ) containing a twin boundary (TB) in nanocrystalline palladium has been observed along the common axis direction. Molecular statics calculation and imaging simulation were performed to determine the atomic structure of the TJ. The modeling structure exhibits that the adjoining TB is a distorted one, whilst other two adjoining grain boundaries (GBs) exist in steady equilibrium states. The present observation gives a clear  example  demonstrating that the adjoining TB can release the larger stresses residing at the junction.

Key words: Triple junction, Grain boundary, Molecular statics, High-resolution transmission electron microscopy (HRTEM)