کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7880446 | 1509586 | 2015 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The impact of elastic and plastic strain on relaxation and crystallization of Pd-Ni-P-based bulk metallic glasses
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: The impact of elastic and plastic strain on relaxation and crystallization of Pd-Ni-P-based bulk metallic glasses The impact of elastic and plastic strain on relaxation and crystallization of Pd-Ni-P-based bulk metallic glasses](/preview/png/7880446.png)
چکیده انگلیسی
The effects of deformation and subsequent heat treatment on the low-temperature heat capacity, enthalpy relaxation rate and mechanical losses of two Pd-Ni-P-based bulk metallic glasses of slightly different compositions and different thermal stabilities have been investigated. It was found that the crystallization temperatures decreased significantly with imposed strain and the effect was more pronounced for the alloy with a higher thermal stability. The boson heat capacity peak increases with increasing strain in both alloys. However, after annealing treatments above room temperature, it relaxes to a lower enthalpy state as compared to that of the as-quenched state for the alloy with a lower thermal stability. The existence of two counteracting processes that might be related to different shear band structures within one homogeneously deformed sample is suggested. These results agree with the internal friction data, which indicate different regimes of mechanical damping as a function of the strain amplitude, while the critical amplitude of a transition between the regimes depends on the imposed strain. The results are interpreted within the energy landscape approach and advocate that the composition-dependent local atomic configurations affect significantly the response of the glass to an applied strain.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Materialia - Volume 90, 15 May 2015, Pages 318-329
Journal: Acta Materialia - Volume 90, 15 May 2015, Pages 318-329
نویسندگان
Yu.P. Mitrofanov, M. Peterlechner, I. Binkowski, M.Yu. Zadorozhnyy, I.S. Golovin, S.V. Divinski, G. Wilde,