Mattissen D, Waerø A, Molodov D A, Shvindlerman L S, Gottstein G
Institute for Physical Metallurgy and Metal Physics, RWTH Aachen, Kopernikusstr. 14, 52056 Aachen, Germany.
J Microsc. 2004 Mar;213(3):257-61. doi: 10.1111/j.0022-2720.2004.01281.x.
A special technique for in-situ observation and recording of triple junction motion is introduced. The described method makes it possible to study the motion of connected grain boundaries, i.e. triple junctions and their geometry. The results of an investigation of the steady-state motion of grain boundary systems with triple junctions in aluminium-magnesium are presented. The analysed triple junctions show a distinctive deviation of contact angle from the equilibrium value 120 degrees as assumed for the deviation of the Von Neumann-Mullins relation. The type of triple junction can have an essential influence on grain boundary motion and thus on grain growth.
介绍了一种用于原位观察和记录三叉晶界运动的特殊技术。所描述的方法使得研究连接晶界（即三叉晶界及其几何形状）的运动成为可能。给出了对铝镁合金中含三叉晶界的晶界系统稳态运动的研究结果。分析的三叉晶界显示出接触角与冯·诺依曼 - 穆林斯关系偏差所假定的平衡值120度有明显偏差。三叉晶界的类型对晶界运动进而对晶粒生长可能有重要影响。
