期刊
SCRIPTA MATERIALIA
卷 86, 期 -, 页码 32-35出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2014.04.026
关键词
Magnesium alloys; Creep; Precipitation; TEM; Atom probe
Addition of Zn to Mg-Nd-La alloys resulted in an order of magnitude drop in the minimum creep rate. This remarkable improvement in creep resistance resulted from a high number density of highly refined gamma precipitates within the alpha-Mg matrix coupled with preferential segregation of Zn atoms to defect/dislocation structures. These two microstructural features are expected to enhance the creep resistance by retarding dislocation motion within the alpha-Mg matrix. (C) 2014 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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