Lee, BJ Lee, CS Lee, JC 2024-01-21T07:44:08Z 2024-01-21T07:44:08Z 2022-01-25 2003-12 1359-6454 https://pubs.kist.re.kr/handle/201004/138011 The deformation behavior of amorphous and nanocrystalline pure Ni thin films has been investigated using a molecular dynamics simulation study based on a semi-empirical interatomic potential (MEAM). It was observed that a tensile stress introduced to an amorphous material can enhance crystallization which eventually serves as an important deformation mechanism. After completion of crystallization, grains grow mainly by the rotation and coalescence, and with increasing grain size, the flow stress also increases. It was also found that when the grain size is small (below about 3 nm), the dominant deformation mechanisms are the grain rotation and the grain boundary sliding, the former being more active for smaller grains. The dependence of these observations on the interatomic potential used in the simulation is also discussed. (C) 2003 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. English PERGAMON-ELSEVIER SCIENCE LTD Stress induced crystallization of amorphous materials and mechanical properties of nanocrystalline materials: a molecular dynamics simulation study Article 10.1016/S1359-6454(03)00446-4 1 ACTA MATERIALIA, v.51, no.20, pp.6233 - 6240 ACTA MATERIALIA 51 20 6233 6240 N scie scopus 000187219700018 2-s2.0-0242523110 Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering Materials Science Metallurgy & Metallurgical Engineering Article COMPUTER-SIMULATION GRAIN-BOUNDARIES FCC METALS DEFORMATION POTENTIALS SOLIDS CU NI PD stress induced crystallization amorphous nanocrystalline mechanical property molecular dynamics