Ultra-large-scale phase-field simulation study of ideal grain growth

作     者：Eisuke Miyoshi Tomohiro Takaki Munekazu Ohno Yasushi Shibuta Shinji Sakane Takashi Shimokawabe Takayuki Aoki 

作者机构：Graduate School of Science and TechnologyKyoto Institute of TechnologyMatsugasakiSakyo-kuKyoto 606-8585Japan Faculty of Mechanical EngineeringKyoto Institute of TechnologyMatsugasakiSakyo-kuKyoto 606-8585Japan Division of Materials Science and EngineeringFaculty of EngineeringHokkaido UniversityKita 13 Nishi 8Kita-kuSapporoHokkaido 060-8628Japan Department of Materials EngineeringThe University of Tokyo7-3-1 HongoBunkyo-kuTokyo 113-8656Japan The Supercomputing DivisionInformation Technology CenterThe University of Tokyo2-11-16 YayoiBunkyo-kuTokyo 113-8658Japan Global Scientific Information and Computing CenterTokyo Institute of Technology2-12-1 i7-3 O-okayamaMeguro-kuTokyo 152-8550Japan 

出 版 物：《npj Computational Materials》 (计算材料学（英文）)

年 卷 期：2017年第3卷第1期

页      面：247-252页

核心收录：

学科分类：09[农学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0901[农学-作物学] 0701[理学-数学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 0801[工学-力学（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：supported by a Grant-in-Aid for Scientific Research(B)(No.16H04490)from the Japan Society for the Promotion of Science(JSPS) a Grant-in-Aid for Scientific Research(S)(No.26220002)from the Ministry of Education,Culture,Sports and Technology(MEXT),the Joint Usage/Research Center for Interdisciplinary Large-scale Information Infrastructures,the High Performance Computing Infrastructure in Japan 

主　　题：grain field establishing 

摘      要：Grain growth,a competitive growth of crystal grains accompanied by curvature-driven boundary migration,is one of the most fundamental phenomena in the context of metallurgy and other scientific ***,the true picture of grain growth is still controversial,even for the simplest(or‘ideal’)*** problem can be addressed only by large-scale numerical ***,we analyze ideal grain growth via ultra-large-scale phase-field simulations on a supercomputer for elucidating the corresponding authentic statistical *** performed simulations are more than ten times larger in time and space than the ones previously considered as the largest;this computational scale gives a strong indication of the achievement of true steady-state growth with statistically sufficient number of ***,we provide a comprehensive theoretical description of ideal grain growth behaviors correctly quantified by the present *** findings provide conclusive knowledge on ideal grain growth,establishing a platform for studying more realistic growth processes.