کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7988455 1515833 2016 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The general effect of atomic size misfit on glass formation in conventional and high-entropy alloys
ترجمه فارسی عنوان
اثر کلی اندازه ذرات اتمی در شکل گیری شیشه در آلیاژ های معمولی و آنتروپی بالا
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
چکیده انگلیسی
It is a longstanding notion that atomic size misfit plays an important role with regard to glass formation in multi-component alloys. In the previous studies, this atomic size effect was commonly modeled as an “inclusion-in-matrix” problem and glass formation was usually linked to a threshold volume strain in “matrix” or solvent atoms. However, it becomes difficult to directly apply this approach to high entropy alloys, which are in lack of a clear distinction between solvent and solute atoms. With the simple geometric model we recently developed, here we show that glass formation in over two hundred glass-forming alloys, including conventional and high-entropy alloys, can be correlated with the excessive fluctuation in the intrinsic residual strains that result from the atomic size misfit. This interesting behavior suggests that, in most glass-forming multicomponent alloys hitherto reported, the atomic size effect acts with the chemistry effect to promote glass formation. Furthermore, our findings also imply that glass formation in multi-component alloys, regardless of their compositional complexity, may be rationalized with the Lindamann's criterion that was long established for the instability of crystalline lattices.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Intermetallics - Volume 78, November 2016, Pages 30-41
نویسندگان
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