Influences of melt treatment on grain sizes and morphologies of AZ9 1D alloy

Autor:	Da-ben Zeng, Shuang-shou Li, Jing-lin Tang, Xiang-chao Qi
Rok vydání:	2007
Předmět:	Materials science Metallurgy Alloy Metals and Alloys engineering.material Geotechnical Engineering and Engineering Geology Condensed Matter Physics Microstructure Grain size Crystal Phase (matter) Materials Chemistry engineering Shape factor Mass fraction Grain boundary strengthening
Zdroj:	Transactions of Nonferrous Metals Society of China. 17:887-892
ISSN:	1003-6326
DOI:	10.1016/s1003-6326(07)60194-0
Popis:	Influences of the three melt treatment processes (namely, refinement with carbon inoculation, electromagnetic stirring and ”refinement & electromagnetic stirring” processing) on the microstructures of AZ91D alloy were explored experimentally. The results indicate that the micron carbon powders inoculation processing with 0.1% (mass fraction) addition level makes the grain size of the primary phase (α-Mg) decrease to approximate 40% that of the initial primary crystal, from about 530μm to 200μm around. The electromagnetic stirring processing not only decreases the grain sizes sharply, but also transfers the grain shape of α-Mg from coarse dendritic to nearly spheralitic with the shape factor from about 0.1 to approximate 0.8. And the ”refinement & electromagnetic stirring” processing improves grain shape of α-Mg further and refines grain size to about 72μm, less than 15% that of the initial primary crystal.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a4a0139f55dbbb9a636c7fa03efd4340 https://doi.org/10.1016/s1003-6326(07)60194-0 Zobrazit plný text záznamu Full Text from ScienceDirect