期刊
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
卷 35, 期 5, 页码 777-783出版社
JOURNAL MATER SCI TECHNOL
DOI: 10.1016/j.jmst.2018.11.025
关键词
Mg alloy; Friction stir processing; Grain refinement; Texture evolution; Biodegradation
资金
- Chinese Natural Science Foundation [51874368]
- Key Program of China on Biomedical Materials Research and Tissue and Organ Replacement [2016YFC1101804, 2016YFC1100604]
- Institute of Metal Research, Chinese Academy of Sciences [2015-ZD01]
The application of a single pass of friction stir processing (FSP) to Mg-Nd-Zn alloy resulted in grain refinement, texture evolution and redistribution of second phases, which improved corrosion resistance. In this work, an as-rolled Mg-Nd-Zn alloy was subjected to FSP. The microstructure in the processed zone of the FS-400 rpm alloy exhibited refined grains, a more homogenous grain size distribution, less second phases, and stronger basal plane texture. The corrosion behavior assessed using immersion tests and electrochemical tests in Hank's solution indicated that the FS-400 rpm alloy had a lower corrosion rate, which was attributed to the increase of basal plane intensity and grain refinement. The hardness was lowered slightly and the elongation was increased, which might be attributed to the redistribution of the crushed second phases. (C) 2019 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
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