中国物理B ›› 2017, Vol. 26 ›› Issue (8): 86802-086802.doi: 10.1088/1674-1056/26/8/086802

• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇    下一篇

Direct characterization of boron segregation at random and twin grain boundaries

Xiang-Long Li(李向龙), Ping Wu(吴平), Rui-Jie Yang(杨锐杰), Shi-Ping Zhang(张师平), Sen Chen(陈森), Xue-Min Wang(王学敏), Xiu-Lan Huai(淮秀兰)   

  1. 1 Beijing Key Laboratory for Magneto–Photoelectrical Composite and Interface Science, School of Mathematics and Physics, University of Science & Technology Beijing, Beijing 100083, China;
    2 School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China;
    3 Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China
  • 收稿日期:2017-03-09 修回日期:2017-04-29 出版日期:2017-08-05 发布日期:2017-08-05
  • 通讯作者: Ping Wu E-mail:pingwu@sas.ustb.edu.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant No. 51476173).

Direct characterization of boron segregation at random and twin grain boundaries

Xiang-Long Li(李向龙)1, Ping Wu(吴平)1, Rui-Jie Yang(杨锐杰)1, Shi-Ping Zhang(张师平)1, Sen Chen(陈森)1, Xue-Min Wang(王学敏)2, Xiu-Lan Huai(淮秀兰)3   

  1. 1 Beijing Key Laboratory for Magneto–Photoelectrical Composite and Interface Science, School of Mathematics and Physics, University of Science & Technology Beijing, Beijing 100083, China;
    2 School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China;
    3 Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China
  • Received:2017-03-09 Revised:2017-04-29 Online:2017-08-05 Published:2017-08-05
  • Contact: Ping Wu E-mail:pingwu@sas.ustb.edu.cn
  • About author:0.1088/1674-1056/26/8/
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant No. 51476173).

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摘要：

Boron distribution at grain boundaries in hot-deformed nickel is directly characterized by the time-of-flight secondary ion mass spectrometry. The segregations of boron are observed at both the random and twin grain boundaries. Two types of segregations at random grain boundaries are observed. The first type of segregation has a high intensity and small width. Its formation is attributed to the incorporating of dislocations into the moving grain boundaries. The second type of segregation arises from the cooling induced segregation at the dislocations associated with the grain boundaries. The segregation at twin boundary is similar to the second type of segregation at random grain boundaries.

关键词: boron segregation, recrystallization, twin boundary, SIMS

Abstract:

Boron distribution at grain boundaries in hot-deformed nickel is directly characterized by the time-of-flight secondary ion mass spectrometry. The segregations of boron are observed at both the random and twin grain boundaries. Two types of segregations at random grain boundaries are observed. The first type of segregation has a high intensity and small width. Its formation is attributed to the incorporating of dislocations into the moving grain boundaries. The second type of segregation arises from the cooling induced segregation at the dislocations associated with the grain boundaries. The segregation at twin boundary is similar to the second type of segregation at random grain boundaries.

Key words: boron segregation, recrystallization, twin boundary, SIMS

中图分类号:  (Metals and alloys)

  • 68.35.bd
68.35.Dv (Composition, segregation; defects and impurities) 61.72.Mm (Grain and twin boundaries) 61.72.sh (Impurity distribution)