Temperature dependence of grain boundary free energy and elastic constants
Temperature dependence of grain boundary free energy and elastic constants
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DOI：
10.1016/j.scriptamat.2009.11.003
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发表时间：
2010-03-01
影响因子：
6
通讯作者：
Foiles, Stephen M.
中科院分区：
文献类型：
--
作者：
Foiles, Stephen M.
这项工作探讨的建议，晶界自由能的温度依赖性可以估计的弹性常数的温度依赖性。采用嵌入原子方法模型计算了Ni的对称倾斜界面的弹性常数和自由能随温度的变化。晶界自由能的比例与剪切模量乘以晶格常数的温度高达约0.75的熔化温度的产品。(C)2009 Acta Materialia Inc.由爱思唯尔有限公司出版。保留所有权利。
This work explores the suggestion that the temperature dependence of the grain boundary free energy can be estimated from the temperature dependence of the elastic constants. The temperature-dependent elastic constants and free energy of a symmetric Sigma 79 tilt boundary are computed for an embedded atom method model of Ni. The grain boundary free energy scales with the product of the shear modulus times the lattice constant for temperatures up to about 0.75 the melting temperature. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.