کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1448749 988682 2010 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Diffusivities of an Al–Fe–Ni melt and their effects on the microstructure during solidification
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Diffusivities of an Al–Fe–Ni melt and their effects on the microstructure during solidification
چکیده انگلیسی

A systematical investigation of the diffusivities in an Al–Fe–Ni melt was presented. Based on the experimental and theoretical data about diffusivities, the temperature- and composition-dependent atomic mobilities were evaluated for the elements in Al–Ni, Al–Fe, Fe–Ni and Al–Fe–Ni melts via an effective approach. Most of the reported diffusivities can be reproduced well by the obtained atomic mobilities. In particular, for the first time the ternary diffusivity of the liquid in a ternary system is described in conjunction with the established atomic mobilities. The effect of the atomic mobilities in a liquid on microstructure and microsegregation during solidification was demonstrated with one Al–Ni binary alloy. The simulation results indicate that accurate databases of mobilities in the liquid phase are much needed for the quantitative simulation of microstructural evolution during solidification by using various approaches, including DICTRA and the phase-field method.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Materialia - Volume 58, Issue 10, June 2010, Pages 3664–3675
نویسندگان
, , , , ,