کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7901391 | 1510435 | 2015 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Main (α) relaxation and excess wing in Zr50Cu40Al10 bulk metallic glass investigated by mechanical spectroscopy
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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: Main (α) relaxation and excess wing in Zr50Cu40Al10 bulk metallic glass investigated by mechanical spectroscopy Main (α) relaxation and excess wing in Zr50Cu40Al10 bulk metallic glass investigated by mechanical spectroscopy](/preview/png/7901391.png)
چکیده انگلیسی
The dynamic mechanical relaxation behaviour of Zr50Cu40Al10 bulk metallic glass was investigated by mechanical spectroscopy as a function of temperature. The mechanical spectra show the evidence of an “excess wing” process at the lower temperatures. The α-relaxation spectra of Zr50Cu40Al10 bulk metallic glass was described with a Kohlrausch-Williams-Watts (KWW) function, with the exponent βKWW = 0.5 ± 0.02. The fragility parameter m of the Zr50Cu40Al10 is m = 57 ± 5. The values of m and βKWW are found to agree with the correlation found for other glasses m = 250(± 30) â 320 βKWW [R. Böhmer, K.L. Ngai, C.A. Angell et al. J. Chem. Phys. 99 (1993) 4201-4209]. Aging experiments give strong evidence that the observed “excess wing” is a submerged secondary process and not part of the α process.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Non-Crystalline Solids - Volume 407, 1 January 2015, Pages 106-109
Journal: Journal of Non-Crystalline Solids - Volume 407, 1 January 2015, Pages 106-109
نویسندگان
J.C. Qiao, R. Casalini, J.M. Pelletier,