期刊
SCRIPTA MATERIALIA
卷 57, 期 12, 页码 1137-1140出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2007.08.006
关键词
Cr2AlC; elasticity; ab initio; transmission electron microscopy
The reported experimentally determined bulk modulus for Cr2AlC is 28-40% lower than the value obtained by ab initio calculations. To identify the origin of this extensive difference between theory and experiment, the elastic modulus of thin Cr2AlC films was measured by nanoindentation and the temperature dependence thereof was studied by ab initio molecular dynamics. Our experimental and theoretical elastic modulus data are within the expected error margin and hence consistent with the published ab initio data. (C) 2007 Published by Elsevier Ltd. on behalf of Acta Materialia Inc.
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