Motion of a grain boundary facet in aluminum
Motion of a grain boundary facet in aluminum
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铝中晶界面的运动
DOI：
10.1016/j.actamat.2013.05.043
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发表时间：
2013
期刊：
影响因子：
9.4
通讯作者：
G. Gottstein
中科院分区：
文献类型：
--
作者：
J.-E. Brandenburg;L. A. Barrales-Mora;D. A. Molodov;G. Gottstein
用扫描电镜原位研究了高温下毛细驱动的20.8° ~ 100 °倾斜晶界在铝双晶中的形态和迁移。移动边界假定一个半刻面的配置组成的一个奇异的小平面连接到一个弯曲的边界部分加入一个独特的边缘。在恒温条件下，带小平面的边界稳定移动，其形状保持自相似。在所研究的温度范围内，刻面长度和刻面与弯曲边界段之间的连接角都没有变化。分析了“四分之一圈”几何形状下半刻面晶界的毛细迁移。计算结果表明，形成移动的刻面的主要因素是刻面与弯曲边界之间的能量差。确定了面迁移率的温度依赖性。所研究的毛细管驱动的平面边界/刻面的迁移活化焓是比由施加的应力驱动的几何相似的边界的迁移的活化焓高两个因子。
The shape and migration of a capillary-driven 20.8°〈100〉 tilt grain boundary in aluminum bicrystals were investigated in situ in a scanning electron microscope at elevated temperatures. The moving boundary assumed a semi-faceted configuration composed of a singular facet connected to a curved boundary section joined at a distinct edge. At constant temperature the boundary with a facet moved steadily and its shape remained self-similar. Both the facet length and the connecting angle between the facet and the curved boundary section did not change over the investigated temperature range. The capillary-driven migration of the semi-faceted grain boundary in “quarter-loop” geometry was analyzed. The obtained results revealed that the major factor responsible for the formation of the mobile facet was the energy difference between the facet and the curved boundary. The temperature dependence of the facet mobility was determined. The migration activation enthalpy of the investigated capillary-driven planar boundary/facet was a factor of two higher than the activation enthalpy for migration of a geometrically similar boundary driven by an applied stress.
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DOI：
10.1016/0001-6160(89)90138-7
发表时间：
1989-08-01
期刊：
ACTA METALLURGICA
影响因子：
--
作者：
HSIEH, TE;BALLUFFI, RW
通讯作者：
BALLUFFI, RW
Zn 中晶界的迁移
影响因子：
9.4
作者：
Chr. Günster;D. A. Molodov;G. Gottstein
通讯作者：
G. Gottstein
刻面对锌孪晶边界运动的影响
影响因子：
3
作者：
V. Sursaeva
通讯作者：
V. Sursaeva
影响因子：
3.5
作者：
T. Read
通讯作者：
T. Read
DOI：
10.1016/0036-9748(84)90509-x
发表时间：
1984-01-01
期刊：
SCRIPTA METALLURGICA
影响因子：
--
作者：
MOLODOV, DA;STRAUMAL, BB;SHVINDLERMAN, LS
通讯作者：
SHVINDLERMAN, LS