کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1449498 988706 2008 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The influence of Cr and B additions on the mechanical properties and oxidation behaviour of L21-ordered Fe-Al-Ti-based alloys at high temperatures
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
The influence of Cr and B additions on the mechanical properties and oxidation behaviour of L21-ordered Fe-Al-Ti-based alloys at high temperatures
چکیده انگلیسی
Several Fe25AlTiX (X = Cr, B) L21-ordered (Heusler phase) alloys with 15 or 20 at.% Ti and varying Cr and B contents have been investigated with respect to their mechanical properties and their oxidation behaviour at elevated temperatures. The mechanical properties have been characterized by means of high-temperature compression tests, four-point-bending tests and creep tests at 750, 800 and 850 °C. The oxidation behaviour has been examined using thermogravimetric analysis at 800 °C in synthetic air. The results show that when Cr and B are added, the latter results in the formation of TiB2, is beneficial for the creep resistance and has no influence on the still-excellent oxidation resistance. However, the alloys show rather high brittle-to-ductile transition temperatures, which can be lowered by the addition of TiB2 as a result of grain refinement.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Materialia - Volume 56, Issue 10, June 2008, Pages 2400-2405
نویسندگان
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