کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1601863 | 1005219 | 2008 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Phase equilibria in the Fe-Al-Mo system - Part II: Isothermal sections at 1000 and 1150 °C
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Isothermal sections for 1000 and 1150 °C in the Fe-Al-Mo system have been determined experimentally by metallography, X-ray diffraction (XRD) and electron probe microanalysis (EPMA) on equilibrated alloys and diffusion couples. The phase Al8FeMo3 (Ï1) was observed at both temperatures. At 1150 °C the phases εâ and Ï2 are found in addition, which both have considerable homogeneity ranges. εâ has the hexagonal Al8Cr5-type structure (R-3m, hR26, D810). It can be considered as the ternary derivate of the binary high-temperature phase Al8Fe5 (ε). Ï2 has a body-centred cubic W-type structure (Im3m, cI2, A2) with the lattice constant a0 varying between 0.296 and 0.313 nm. Both phases together with the binary phase Al8Fe5 belong to the γ brass family. By differential thermal analysis (DTA) the formation temperatures for εâ and Ï2 have been established. Besides the occurrence of these phases the strong increase of the solid solubility for Mo in αFe,Al/FeAl with increasing temperature is the main feature within this system. The μ phase Fe7Mo6 is the only other phase which has a marked solid solubility for the third component. From the established phase equilibria a reaction scheme for the temperature range 800-1150 °C has been set up.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Intermetallics - Volume 16, Issue 6, June 2008, Pages 834-846
Journal: Intermetallics - Volume 16, Issue 6, June 2008, Pages 834-846
نویسندگان
M. Eumann, G. Sauthoff, M. Palm,