Roughening of low-angle grain boundaries.
Roughening of low-angle grain boundaries.
复制标题
小角度晶界粗糙化。
DOI：
10.1103/physrevlett.57.735
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发表时间：
1986
影响因子：
8.6
通讯作者：
Rottman
中科院分区：
文献类型：
--
作者：
Rottman
研究了小角度晶界粗化的可能性。通过展示晶界步骤之间的类比，没有长程应变和固体表面上的步骤，我认为，晶界粗糙化过渡，固体表面相同类型的，是可能的。结果表明，当晶粒间取向差θ趋于零时，晶界台阶的能量以ln（1 θ）的形式发散。从这个分歧，我认为，对于足够小的θ，固体将熔化之前，晶界有机会粗糙化，随着温度的升高。
The possibility of roughening in low-angle grain boundaries is investigated. By exhibiting an analogy between grain-boundary steps which do not have long-range strain and steps on solid surfaces, I argue that a grain-boundary roughening transition, of the same type as for solid surfaces, is possible. It is found that, as the grain-grain misorientation θ goes to zero, the energy of such a grain-boundary step diverges as ln (1 θ). From this divergence I argue that, for sufficiently small θ, the solid will melt before the grain boundary has a chance to roughen as the temperature increases.