期刊
CORROSION SCIENCE
卷 82, 期 -, 页码 392-403出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2014.01.041
关键词
Magnesium; Weight loss; Polarisation; SEM; Pitting corrosion
资金
- Basic Science Research Program through the National Research Foundation of Korea
- Ministry of Education, Science and Technology [2013R1A1A2010637]
The effect of indirect extrusion on microstructural refinement, mechanical properties and corrodibility of the pure Mg and Mg-Ca alloys (up to 3 wt.% Ca) in Hank's solution has been systematically studied. After extrusion, mechanical properties including tensile strength and ductility, and corrosion resistance of the Mg-Ca alloys were greatly enhanced in the Mg-Ca alloys with Ca >= 1%. Effective break-up of (semi-) continuous secondary phase (Mg2Ca) existing along grain boundaries or interdendritic regions during extrusion played a critical role in enhancement of the corrosion resistance of the Mg-Ca alloys with Ca >= 1% compared to the as-cast counterparts. (C) 2014 Elsevier Ltd. All rights reserved.
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