Influence of Grain Boundary on Melting
融化上的谷物边界的影响作者机构：State Key Laboratory of Nonlinear MechanicsInstitute of MechanicsChinese Academy of SciencesBeijing 100080
出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)
年 卷 期：2001年第18卷第9期
页 面：1242-1244页
核心收录：
学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 070301[理学-无机化学]
基 金：Supported by the National Natural Science Foundation of China under Grant No.19772066
主 题：temperature. dynamics. crystal
摘 要：The temperature behaviour of an Al bicrystal with surfaces consisting of (110) and (111) crystals is simulated using molecular dynamics. The result shows that the (110) crystal losses its crystalline order at 820K, whereas the disorder does not propagate through the (111) crystal at this temperature. Instead, some disordered atoms are recrystallized into the (111) crystal and the initial grain boundary changes into a stable order-disorder interface. Thus, it was discovered that at a temperature near its melting point, the (111) crystal grew and obstructed the propagation of disorder. Such an obstruction is helpfulfor understanding melting.
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