کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1791278 1524467 2013 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Microstructure evolution in Cu–1.54 wt% Cr alloy during directional solidification
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Microstructure evolution in Cu–1.54 wt% Cr alloy during directional solidification
چکیده انگلیسی

The effect of the growth velocity on the microstructure evolution of Cu–1.54 wt% Cr alloy under directional solidification was investigated. The cellular eutectic structure was observed at 50 μm/s. However, a centered Cr-rich β dendritic structure surrounded by a layer of Cu-rich α phase and a eutectic structure between Cu-rich α phase and Cr-rich β phase were observed when a sample solidified at a rate faster than 50 μm/s. A microstructure of a centered Cr-rich β equiaxed dendritic structure covered by a Cu-rich α phase grew at temperatures higher than the eutectic interface temperature. This paper explains the mechanism of the microstructure formation as a function of growth velocity.


► Directional solidification experiments were carried out for the Cu–1.54 wt%Cr alloy.
► Eutectic planar was shown in a low growth velocity.
► Cr-rich β equiaxed dendritic structure was presented for velocities>50 μm/s.
► A centered Cr-rich β dendritic structure surrounded by a layer of Cu-rich α phase.
► The mechanism of the microstructure formation as a function of velocity was explained.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Crystal Growth - Volume 362, 1 January 2013, Pages 58–61
نویسندگان
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