کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1599689 1515844 2015 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Crystallography of Fe2Al5 phase at the interface between solid Fe and liquid Al
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Crystallography of Fe2Al5 phase at the interface between solid Fe and liquid Al
چکیده انگلیسی
In this study, the microstructures and crystallographic features of a η-Fe2Al5 phase formed on pure Fe hot-dipped in a pure Al melt at 750 °C were examined in order to understand the η phase layer formation having a saw-tooth morphology. A number of the columnar η grains (forming the η phase layer) grow towards the solid Fe (α-Fe) side along the [001] direction, resulting in a significant saw-tooth morphology at the interface between the η and α-Fe phases. The neighboring η grains have high-angle boundaries with a common [001] axis. In the η phase layer, the low-angle boundaries develop close to the liquid Al side, and their density becomes higher with longer dipping times, resulting in the development of a fine dislocation substructure in the η phase. In the α-Fe phase, fine substructure consisting of a high density of low-angle boundaries develops around the growth tips of the columnar η grains. These substructure developments are likely responsible for the α → η transformation strain. A possible mechanism for the formation of this η phase layer having a saw-tooth morphology will be discussed in terms of the stress field caused by the α → η transformation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Intermetallics - Volume 67, December 2015, Pages 1-11
نویسندگان
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