کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1621963 1516399 2009 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Non-equilibrium solidification character of Zr56.2Ti13.8Nb5.0Cu6.9Ni5.6Be12.5 bulk metallic glass composites containing ductile dendrite phase
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Non-equilibrium solidification character of Zr56.2Ti13.8Nb5.0Cu6.9Ni5.6Be12.5 bulk metallic glass composites containing ductile dendrite phase
چکیده انگلیسی

Bulk metallic glass (BMG) composites containing ductile phase were prepared by rapid water quenching of a homogenous Zr56.2Ti13.8Nb5.0Cu6.9Ni5.6Be12.5 melt. The microstructure and composition of the materials were investigated by X-ray diffraction (XRD), optic microscopy (OM), and scanning electrion microscopy (SEM) attached with energy-dispersive spectroscopy (EDS). The secondary dendrite arm spacing (SDAS) in the composites was detected and the solidification parameters of this amorphous composites were obtained. The result shows that the composition of the dendrite phase is depleted in Ni, Cu and enriched in Zr, Nb and Ti, which strongly deviates from the nominal composition. SDAS is gradually increasing from the surface to the centre of the specimen, which inverses proportionally to cooling rate in Newton cooling type. With the increasing diameter of the samples, the secondary arm spacing gradually increases, except the specimen with the diameter of Φ25 mm. Meanwhile, the relationship between SDAS and sample diameter or thickness is given quantitatively.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 478, Issues 1–2, 10 June 2009, Pages 202–205
نویسندگان
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