کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10655886 1005260 2005 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The stress anomaly in FeAl-Fe3Al alloys
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
The stress anomaly in FeAl-Fe3Al alloys
چکیده انگلیسی
The anomalous stress peak observed near 500-600 °C in Fe-Al alloys has now been convincingly explained using a model of hardening by immobile thermal vacancies on the lower temperature side of the peak and the loss of hardening as these vacancies become mobile at higher temperatures. The large numbers of vacancies required for such hardening are associated with compositions close to stoichiometry, i.e. 40-50%Al, raising the question of whether such a vacancy hardening model can be adopted for Fe3Al alloys, which show a similar stress peak anomaly. Examination of data on vacancy formation over the entire range of composition, Fe-Fe3Al-FeAl, shows that, indeed, a vacancy hardening model appears capable of explaining the stress anomaly for both FeAl and Fe3Al.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Intermetallics - Volume 13, Issue 12, December 2005, Pages 1269-1274
نویسندگان
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