کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7970960 | 1514398 | 2014 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of P and Sr additions on the microstructure of hypereutectic Al-15Si-14Mg-4Cu alloy
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The effects of P and Sr additions on the primary and eutectic phases in Al-15Si-14Mg-4Cu alloy were examined using thermal analysis and microstructural examination. With the addition of P, the primary Mg2Si particles were refined considerably, accompanied by a change in morphology from a coarse dendritic to a fine polygonal shape. Through the addition of Sr, eutectic Mg2Si and Si particle morphologies were also altered from coarse script-like and coarse acicular-type morphologies, respectively, to a fine fibrous form. Iron impurities in the alloy resulted in the formation of the Ï-Fe phase (Al8Mg3FeSi6) in the structure, and the addition of Sr transformed the morphology of the Ï-Fe from a script-like to a fine twin platelet form. The results show that addition of Sr or Sr + P reduces the eutectic temperature and reduces the size and therefore increases the number density of Mg2Si particles, Si and Ï-Fe phases in the alloy.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Characterization - Volume 89, March 2014, Pages 112-123
Journal: Materials Characterization - Volume 89, March 2014, Pages 112-123
نویسندگان
M. Tebib, A.M. Samuel, F. Ajersch, X.-G. Chen,