Experimental Study on the Mechanism of Grain Boundary Sliding

晶界滑动机理的实验研究

基本信息

  • 批准号:
    04650646
  • 负责人:
  • 金额:
    $ 1.09万
  • 依托单位:
  • 依托单位国家:
    日本
  • 项目类别:
    Grant-in-Aid for General Scientific Research (C)
  • 财政年份:
    1992
  • 资助国家:
    日本
  • 起止时间:
    1992 至 1993
  • 项目状态:
    已结题

项目摘要

In order to elucidate the mechanism of grain boundary sliding, the characteristics of the so called grain boundary slide hardening was investigated experimentally by the stress change tests. Aluminum bicrystals containing general grain boundary were grown by the Bridgeman method. High temperature microscope equipped with creep testing instrument was used. The change in the rate of grain boundary sliding accompanied with the stress change was measured by using video recording system.The results are summarized as follows.(1) The rate of grain boundary sliding increases with the increase in stress without exceptions. However, the amount of the increase in the rate of grain boundary sliding depends not only on the amount of stress change but also on the rate of grain boundary sliding before the stress change. (2) The decrease in the stress results in the decrease in the rate of grain boundary sliding or the stop of the sliding. (3) The reloading after the stress reduction generates the recovery of grain boundary slide hardening.Based on these experimental results, it was concluded that the grain boundary sliding of general grain boundary in dominated by the motion of dislocations inside the grain boundary which is affected by the internal stresses caused by the dislocation structure around the grain boundary.
为了阐明晶界滑移的机理,通过应力变化试验研究了晶界滑移硬化的特征。采用Bridgeman法生长了含总晶界的铝双晶。使用配有蠕变测试仪的高温显微镜。利用摄像系统测量了晶界滑移率随应力变化的变化。结果表明:(1)晶界滑移率随应力的增加而增大,无例外。然而,晶界滑移速率的增加量不仅取决于应力变化量,还取决于应力变化前的晶界滑移速率。(2)应力的降低导致晶界滑移速率的降低或滑移的停止。(3)应力降低后的再加载导致晶界滑移硬化的恢复,实验结果表明,一般晶界的晶界滑移主要是位错在晶界内的运动,位错运动受晶界周围位错结构产生的内应力的影响。

项目成果

期刊论文数量(6)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
H.Fukutomi, Kazushi, Nonomura and Yoshiaki Takada: "Difference in the Behavior of Grain Boundary Sliding under Pure Shear and Tensile Stresses" Scripta Metallurgica et Materialia. (to be submitted).
H.Fukutomi、Kazushi、Nonomura 和 Yoshiaki Takada:“纯剪切和拉伸应力下晶界滑动行为的差异”Scripta Metallurgica et Materialia。
  • DOI:
  • 发表时间:
  • 期刊:
  • 影响因子:
    0
  • 作者:
  • 通讯作者:
Hiroshi Fukutomi: "Structure Defect and the Behavior of Coincidence Boundary" Bulletin of the Japan Institute of Metals, J.Japan Inst.Metals. 31, (to be submitted). 150 (1992)
Hiroshi Fukutomi:“结构缺陷和重合边界的行为”日本金属研究所通报,J.Japan Inst.Metals。
  • DOI:
  • 发表时间:
  • 期刊:
  • 影响因子:
    0
  • 作者:
  • 通讯作者:
Hiroshi Fukutomi, Kazushi Nonomura and Yoshiaki Takada: "Experimental Study on the Mechanism of Grain Boundary Sliding by Stress Change Tests."
Hiroshi Fukutomi、Kazushi Nonomura 和 Yoshiaki Takada:“通过应力变化测试进行晶界滑动机制的实验研究”。
  • DOI:
  • 发表时间:
  • 期刊:
  • 影响因子:
    0
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FUKUTOMI Hiroshi其他文献

FUKUTOMI Hiroshi的其他文献

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{{ truncateString('FUKUTOMI Hiroshi', 18)}}的其他基金

Orientation control of compounds with layered structure-Development of principle and production of high performance thermoelectric materials-
层状结构化合物的取向控制-高性能热电材料的原理开发与生产-
  • 批准号:
    22360290
  • 财政年份:
    2010
  • 资助金额:
    $ 1.09万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Development of Texture Evolution Process for Layered Cobaltites based on Hot Working
基于热加工的层状钴矿织构演化工艺开发
  • 批准号:
    19560723
  • 财政年份:
    2007
  • 资助金额:
    $ 1.09万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Formation Mechanism of New Grains in Dynamic Recrystallizaion based on Local Orientation Analysis
基于局部取向分析的动态再结晶新晶粒形成机制
  • 批准号:
    14550684
  • 财政年份:
    2002
  • 资助金额:
    $ 1.09万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Process Development for the Orientation Control of the(α_2+γ)Lamellar Microstructure in TiAl Intermetallic Compounds
TiAl金属间化合物(α_2+γ)层状微观结构取向控制工艺开发
  • 批准号:
    09450259
  • 财政年份:
    1997
  • 资助金额:
    $ 1.09万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B).
Orientation Control of the (alpha_2+gamma) Lamellar Microstructure in TiAl Intermetallic Compounds by Thermo-mechanical Treatment
热机械处理对 TiAl 金属间化合物 (alpha_2 gamma) 层状微观结构的取向控制
  • 批准号:
    07650812
  • 财政年份:
    1995
  • 资助金额:
    $ 1.09万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
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