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论文类型：期刊论文

发表时间：2010-03-01

发表刊物：SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY

收录刊物：SCIE、EI

卷号：53

期号：3,SI

页面范围：440-444

ISSN号：1674-7348

关键字：bulk metallic glasses; cluster; Ni-Fe-based alloys; Modulated Differential Scanning Calorimetry

摘要：The glass-forming ability and properties of Ni-based Ni-Fe-B-Si-Ta bulk metallic glasses are explored in this work. The alloy compositions are determined by using a combination of the cluster line approach, the multi-alloying strategy and the substitutions of similar elements. Bulk metallic glasses with diameters of 3 mm take shape at compositions formulated under the cluster-plus-glue-atom model [M(9)B]B similar to[(Ni(1-x)Fe(x))(7.71)(Si(0.66)Ta(0.34))(1.29)B]B(0.94)=(Ni(1-x)Fe(x))(70.5)B(17.7)Si(7.8)Ta(4), x=0.35-0.45, where the bracketed part is the cluster and the unbracketed part is the glue atoms. These alloys exhibit good magnetic properties. The maximum I(s) is found in the (Ni(0.55)Fe(0.45))(70.5)B(17.7)Si(7.8)Ta(4) alloy which reaches 0.51 T, with its H(c) as low as 8.5 A/m. Interestingly, these alloys display dual glass transitions at (Ni(0.65)Fe(0.35))(70.5)B(17.7)Si(7.8)Ta(4), (Ni(0.60)Fe(0.4))(70.5)B(17.7)Si(7.8)Ta(4) and (Ni(0.55)Fe(0.45))(70.5)B(17.7)Si(7.8)Ta(4) as unveiled by Temperature-Modulated Differential Scanning Calorimetry.