کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7999776 1516270 2015 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Grain refining potency of Nb-B inoculation on Al-12Si-0.6Fe-0.5Mn alloy
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Grain refining potency of Nb-B inoculation on Al-12Si-0.6Fe-0.5Mn alloy
چکیده انگلیسی
In a recent work we reported that the combined addition of Nb and B has higher grain refinement effectiveness than the addition of these individual chemical elements. In this work a commercial Al-12Si-0.6Fe-0.5Mn alloy is employed to fully characterise the refining potency of Nb-B inoculation. It is found that the addition of Nb powder and KBF4 flux to Al-Si melt introduces potent nuclei with low lattice mismatch with the primary α-Al dendrites (i.e. low undercooling) and, thus, promote noteworthy grain refinement through heterogeneous nucleation. Nb-B inoculation induces a significant increment of the volumetric number of grains, decreases the undercooling needed for solidification and makes the grain size of the Nb-B inoculated material less sensitive to the cooling rate employed to solidify the material.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 623, 25 February 2015, Pages 79-82
نویسندگان
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