کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1601963 | 1005225 | 2008 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Solid-state phase equilibria in metal-rich Hf-Ti-Si system at 1350 °C
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Solid-state phase equilibria in metal-rich Hf-Ti-Si system at 1350 °C Solid-state phase equilibria in metal-rich Hf-Ti-Si system at 1350 °C](/preview/png/1601963.png)
چکیده انگلیسی
Knowledge on the phase equilibria at the metal-rich region of Hf-Ti-Si was needed for the development of Nb-silicide based composites. A total of seven Hf-Ti-Si alloys with Si concentrations up to 37.5 at.% were fabricated by directional solidification and annealed at 1350 °C. The microstructure of the annealed alloys was examined using scanning electron microscopy, electron probe microanalysis, and X-ray diffraction analysis. The α(Hf,Ti,Si), β(Hf,Ti,Si), (Hf,Ti)5Si3, and Hf(Ti)2Si phases were identified in the metal-rich region of the Hf-Ti-Si system. The phase relationships between these phases are two three-phase equilibria: β(Hf,Ti,Si) + (Hf,Ti)5Si3 + Hf(Ti)2Si, and β(Hf,Ti,Si) + α(Hf,Ti,Si) + Hf(Ti)2Si, and three two-phase equilibria β(Hf,Ti,Si) + (Hf,Ti)5Si3, β(Hf,Ti,Si) + Hf(Ti)2Si, and α(Hf,Ti,Si) + Hf(Ti)2Si. The solubility of Ti in Hf(Ti)2Si was measured as 9.8 at.%. The Si concentration in β(Hf,Ti,Si) ranges from 0.8 to 3.3 at.%, while that in α(Hf,Ti,Si) is about 2.6-2.7 at.%.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Intermetallics - Volume 16, Issue 3, March 2008, Pages 353-359
Journal: Intermetallics - Volume 16, Issue 3, March 2008, Pages 353-359
نویسندگان
B.P. Bewlay, Y. Yang, Y.A. Chang,