点击次数：

论文类型：期刊论文

发表时间：2014-12-25

发表刊物：JOURNAL OF ALLOYS AND COMPOUNDS

收录刊物：SCIE、Scopus

卷号：617

页面范围：310-313

ISSN号：0925-8388

关键字：Metallic glasses; Pd alloys; Thermoplastic formability; Mechanical property; Manufacturability

摘要：New P-free Pd-based bulk metallic glasses (BMGs) with high glass-forming ability (GFA) were synthesized in Pd-Si-Ag-Cu alloy system, based on a binary Pd83Si17 alloy. Combined addition of Ag and Cu greatly enhances the stability of supercooled liquid and GFA. The Pd-based BMGs have large supercooled liquid region of 66-77 K. The best GFA was obtained for Pd75Si15Ag3Cu7 alloy, and the glassy rods with diameters of up to 10 mm were fabricated by copper mold casting method without fluxing treatment. These BMGs also exhibit low viscosity of similar to 2 x 10(7) Pa s in the supercooled liquid state, excellent thermoplastic formability, high compressive yield strength of 1626 MPa, and large plastic strain of similar to 0.063. (C) 2014 Elsevier B.V. All rights reserved.