Microstructural evolution and homogeneous viscous flow behavior of a Cu-Zr based bulk metallic glass composites

doi:10.1016/j.jallcom.2014.08.078

	Microstructural evolution and homogeneous viscous flow behavior of a Cu-Zr based bulk metallic glass composites
	Zhang, X.Y.; Yuan, Z.Z.; Li, D.X.
刊名	Journal of Alloys and Compounds
	2014-12-25
卷号	617 页码:670-676
关键词	Aluminum alloys Aluminum metallography Binary alloys Composite materials Copper alloys Copper metallography Deformation Glass High resolution transmission electron microscopy Mechanical properties Metallic glass Microstructural evolution Microstructure Non Newtonian flow Precipitation (chemical) Scanning electron microscopy Silver alloys Silver metallography Strain rate Zircaloy Amorphous matrix phase Bulk metallic glass composites High temperature deformation High-temperature compression Micro-scale particles Stress-strain behaviors Temperature dependent Zr based bulk metallic glass
ISSN号	09258388
DOI	10.1016/j.jallcom.2014.08.078
英文摘要	The high temperature compression behavior of Cu40Zr 44Ag8Al8 rods with 6 mm in diameter was investigated and compared with the literature data. Microstructure of the as-cast rods were characterized by X-ray diffraction, scanning electron microscopy and high resolution transmission electron microscope in the composites state with microscale Al3Zr particles embedded in the amorphous matrix. Deformation results show that the stress-strain behaviors of the bulk metallic glass composites (BMGCs) are strain rate and temperature dependent. In addition, SEM observations reveal that the initially spherical and randomly distributed microscale particles in the amorphous matrix deform to concave polygon in shape and align perpendicular to the load direction during the compression. Meanwhile nano-crystals precipitate continuously from the matrix and aggregate during deformation. Rheological analysis show that the BMGCs exhibit a transition from Newtonian to non-Newtonian in flow behavior dependent on the stain rate. Particles in the amorphous matrix have reinforcement effect on the BMGCs, but the deformation behavior is still dominated by the homogeneous flow of the amorphous matrix phase. © 2014 Elsevier B.V. All rights reserved.
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	Elsevier Ltd
WOS记录号	WOS:000346453100041
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/150368]
专题	材料科学与工程学院党委学生工作部（学生处、易班、武装部）
作者单位	State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou, Gansu 730050, China
推荐引用方式 GB/T 7714	Zhang, X.Y.,Yuan, Z.Z.,Li, D.X.. Microstructural evolution and homogeneous viscous flow behavior of a Cu-Zr based bulk metallic glass composites[J]. Journal of Alloys and Compounds,2014,617:670-676.
APA	Zhang, X.Y.,Yuan, Z.Z.,&Li, D.X..(2014).Microstructural evolution and homogeneous viscous flow behavior of a Cu-Zr based bulk metallic glass composites.Journal of Alloys and Compounds,617,670-676.
MLA	Zhang, X.Y.,et al."Microstructural evolution and homogeneous viscous flow behavior of a Cu-Zr based bulk metallic glass composites".Journal of Alloys and Compounds 617(2014):670-676.