کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1447482 988646 2011 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Thermodynamic aspects of grain growth restriction in multicomponent alloy solidification
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Thermodynamic aspects of grain growth restriction in multicomponent alloy solidification
چکیده انگلیسی

The growth restriction factor Q is the key quantity in current descriptions of the solutal effect on grain growth and grain refinement during solidification of alloys. A rigorous treatment for the evaluation of Q in multicomponent alloys based on consistent thermodynamic descriptions of the alloy phase equilibria is presented. On closer inspection the conventional approach to calculate Q in multicomponent alloys from liquidus gradient mi and partition coefficient ki must fail for a wide range of common alloys exhibiting minute amounts of primary crystallizing intermetallic phase, exemplified for Mg–Al–Mn and Al–Si–Ti alloys. The rigorous approach provides an extension of the applicability range of the concept of Q. The qualitative similarity of inoculant particles and primary intermetallic phases is verified by calculations for Al–Si–Ti–B alloys.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Materialia - Volume 59, Issue 15, September 2011, Pages 6133–6144
نویسندگان
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