+高级检索
晶界迁移研究进展及其在TiAl合金中的原位分析
作者:
作者单位:

凝固技术国家重点实验室

作者简介:

通讯作者:

中图分类号:

基金项目:

国家自然科学基金面上项目(51774238和51971176),2018年装备预先研究教育部联合基金(6141A020332).


Research Progress of Grain Boundary Migration and its in-situ Study on TiAl alloys
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    金属材料中晶粒形态的演变是晶界迁移的结果,而晶粒形态又是决定材料性能的一个重要因素,因此,通过调控晶界迁移以获得目标组织成为工程研究关注的问题。本文综述了金属晶界迁移问题的研究,并给出了作者关于TiAl合金相关的进展:首先介绍了晶界迁移的现象及物理模型,然后分析了晶界迁移的驱动力,并着重说明扩散和应力驱动下的晶界迁移现象。进一步,讨论了晶界迁移中的各种影响因素,包括取向差、晶界结点、曲率、温度和温度梯度等。最后,对晶界迁移调控在工程上的一些应用进行了介绍,特别讨论了其在TiAl合金中的应用,并结合作者的原位观察工作,对两种TiAl合金在高温单相区的晶界迁移现象进行了分析。

    Abstract:

    The evolution of grain morphology is accompanied with grain boundary (GB) migration, and the grain morphology significantly determines the properties. Therefore, the key problem in engineering research is to obtain expected microstructures by controlling GB migration. The understanding on GB migration in metals was reviewed and the current study on TiAl alloys was given in this paper. First, the phenomenon and physical model of GB migration were introduced. Then the driving force, especially the diffusion and stress, was analyzed. Further, the influence factors of GB migration were discussed, including misorientation, grain boundary triple junctions, curvature and temperature. Finally, some applications of the regulation of GB migration were introduced. Combined with in-situ observation, for the first time, the GB migrations of TiAl alloys in single-phase regions at high temperatures were analyzed.

    参考文献
    相似文献
    引证文献
引用本文

杨劼人,张立腾,高子彤,胡锐.晶界迁移研究进展及其在TiAl合金中的原位分析[J].稀有金属材料与工程,2021,50(2):699~708.[yangjieren, zhangliteng, gaozitong, hurui. Research Progress of Grain Boundary Migration and its in-situ Study on TiAl alloys[J]. Rare Metal Materials and Engineering,2021,50(2):699~708.]
DOI:10.12442/j. issn.1002-185X.20200140

复制
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2020-03-01
  • 最后修改日期:2020-03-13
  • 录用日期:2020-03-19
  • 在线发布日期: 2021-03-09
  • 出版日期: