کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10655775 1005243 2005 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The microstructural evolution of NbAlV ternary alloys
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
The microstructural evolution of NbAlV ternary alloys
چکیده انگلیسی
The microstructural evolution during annealing of a series of Nb-Al-V alloys has been studied using electron microscopy. A modified isothermal section of the Nb-Al-V ternary phase diagram is presented. The B2 phase is prominent in the as-cast alloys. On annealing, needle-like A15 particles precipitate in the metastable B2 phase around the grain boundaries. These then spread throughout the grains. The transformation process is very slow when the alloys are annealed below 1273 K due to the difficulty of nucleation. Cold working before annealing can increase effectively the A15 nucleation rate and refine the microstructure.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Intermetallics - Volume 13, Issue 11, November 2005, Pages 1157-1165
نویسندگان
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