期刊
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
卷 20, 期 9, 页码 890-895出版社
SPRINGER
DOI: 10.1007/s12613-013-0811-7
关键词
aluminum-silicon alloys; cerium; manganese; modification; morphology
类别
资金
- Major State Basic Research and Development Program of China [2007CB613702]
- Special Project on the Integration of Industry-University-Research of Guangdong Province
- Ministry of Education [2012A090300016]
- Fundamental Research Funds for the Central Universities [CDJXS11132226]
The influence of Ce or Ce and Mn combined additions on the morphology of alpha-Fe phases in recycled Al-Si alloys was experimentally investigated by microstructure observation and room temperature tensile testing. It is found that Ce modifies the morphology of alpha-Fe phase from the large Chinese script-like into the individual and fine nodular shape. A combined addition of Ce and Mn results in the promotion of primary alpha-Fe formation, and their size increases considerably with the increase in Ce content. The mechanism of the above morphological changes was discussed in accordance with the nucleation and growth of alpha-Fe phase during solidification.
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