کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9796457 | 1514947 | 2005 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of crystallization on the mechanical properties of Zr56.7Cu15.3Ni12.5Nb5.0Al10.0Y0.5 bulk amorphous alloy
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Effect of crystallization on the mechanical properties of Zr56.7Cu15.3Ni12.5Nb5.0Al10.0Y0.5 bulk amorphous alloy Effect of crystallization on the mechanical properties of Zr56.7Cu15.3Ni12.5Nb5.0Al10.0Y0.5 bulk amorphous alloy](/preview/png/9796457.png)
چکیده انگلیسی
Effects of crystallization behavior on the mechanical properties of Zr56.7Cu15.3Ni12.5Nb5.0Al10.0Y0.5 based bulk amorphous alloy (BAA) were studied. Differential scanning calorimetry (DSC) in Ar environment showed three-exothermic peaks at 395, 472 and 659.5 °C and one-endothermic peak at 852 °C. Following DSC study, as received BAA samples were heat-treated in vacuum at six different temperatures 300, 450, 600, 700, 800 and 850 °C. Heat-treated samples were characterized using Vickers microhardness, X-ray diffraction (XRD), differential scanning calorimetry and field emission scanning electron microscopy (FESEM) to study crystallization behavior. It is found that samples heat-treated above the second (472 °C) and third (659.5 °C) exothermic peaks show high microhardness values compared to the as processed samples, and brittle cracking along the indent diagonal. As processed samples show clear evidence of shear banding. FESEM examination revealed existence of nano-scale precipitates for samples heat-treated at 600 and 700 °C, while micro-scale precipitates for 850 °C samples. Quasi-static compression tests showed compressive strain to failure decrease with heat-treated samples compared to as received ones. Fracture morphology of the compression test samples changes from vein pattern for as received to flat facets with multiple cracks for heat-treated samples. Indentation fracture toughness values decrease almost an order of magnitude for heat-treated samples compared to as received samples.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 394, Issues 1â2, 15 March 2005, Pages 302-311
Journal: Materials Science and Engineering: A - Volume 394, Issues 1â2, 15 March 2005, Pages 302-311
نویسندگان
Kakoli Das, Amit Bandyopadhyay, Yogendra M. Gupta,