3D simulations of grain growth in polycrystalline sheets and rods: Effects of free surface and shape of specimen

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• 作者：Jae Sang Lee^a ; ^{js.lee@postech.ac.kr" class="auth_mail" title="E-mail the corresponding author} ; Byeong-Joo Lee^b ; Yang Mo Koo^a ; Seong Gyoon Kim^c
• 关键词：Grain growth ; Phase-field model ; Surface ; Microstructure
• 刊名：Scripta Materialia
• 出版年：2016
• 出版时间：1 January 2016
• 年：2016
• 卷：110
• 期：Complete
• 页码：113-116
• 全文大小：1688 K

文摘

A simple and efficient method for grain growth simulation is presented to account for the existence of free surfaces in polycrystalline solids. This method extends a phase-field model of grain growth, controlling the enthalpy and mean temperature of the system to maintain macroscopic shape of specimens. Effects of free surfaces and specimen shapes on the evolution of grain structure and the shape of individual grains in polycrystalline sheets and rods are examined.