Cu-based bulk amorphous alloy with larger glass-forming ability and supercooled liquid region期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Cu-based bulk amorphous alloy with larger glass-forming ability and supercooled liquid region

Authors:	HM Fu HF Zhang H Wang ZQ Hu

Affiliation:	^aShenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China ^bSchool of Engineering, The University of Queensland, St. Lucia, Qld 4072, Australia ^cFaculty of Engineering and Surveying, University of Southern Queensland, Toowoomba, Qld 4350, Australia

Abstract:	The glassy rod with a maximum sample thickness of 11 mm and larger supercooled liquid region of 108 K was successfully fabricated when substituting Cu with minor amount of Ag in the Cu–Zr–Al–Gd alloy system. The value of γ reaches a maximum of 0.418 for the Cu_45.5Zr₄₅Al₇Gd₂Ag_0.5 bulk metallic glass (BMG) alloy. The high glass-forming ability (GFA) and larger supercooled liquid region are discussed from atomic size, negative mixing heat among constituent elements and thermodynamics.

Keywords:	Glass-forming ability Bulk metallic glass Supercooled liquid region
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