کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1446382 988609 2013 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Characterization of free volume in cold-rolled Zr55Cu30Ni5Al10 bulk metallic glasses
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Characterization of free volume in cold-rolled Zr55Cu30Ni5Al10 bulk metallic glasses
چکیده انگلیسی

Cold-rolled Zr55Cu30Ni5Al10 bulk metallic glasses (BMGs) exhibited volume dilatation across the entire range of thickness reduction fractions from 5.7% to 63%. The dilatation was dominantly attributed to the free volume generated during cold-rolling, together with any open volumes, like the voids or microcracks, or both, which survived even after sufficiently annealing the rolled sample at the temperature in the supercooled liquid region. The relaxation of free volume formed during cold-rolling resulted in more heat evolution per unit volume than that of as-cast glass. The structural change during cold-rolling could be ascribed to the increased fluctuation of atomic-level hydrostatic stress, 〈p2〉, in the glass.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Materialia - Volume 61, Issue 9, May 2013, Pages 3224–3232
نویسندگان
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