Inhomogeneous microstructure and mechanical properties of friction stir processed NiAl bronze

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	Inhomogeneous microstructure and mechanical properties of friction stir processed NiAl bronze
	D. R. Ni; P. Xue; D. Wang; B. L. Xiao; Z. Y. Ma
	2009
发表期刊	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
ISSN	0921-5093
卷号	524 期号:1-2 页码:119-128
摘要	As-cast Cu-9Al-4.5Ni-4Fe NiAl bronze (NAB) alloy was subjected to friction stir processing (FSP) in a wide range of tool rotation rates of 800-2000 rpm and traverse speeds of 50-200 mm/min. After FSP, the initial coarse microstructure of the as-cast NAB was transformed to fine structure, and the porosity defects were eliminated. However, the stir zones were characterized by inhomogeneous structure and could be divided into four regions: fine Widmanstatten primary alpha phase in the surface layer, banded primary alpha and beta' phases in the subsurface layer, equiaxed alpha and beta' phases in the center, and streamlike alpha and beta' phases at the bottom. The heterogeneous microstructure could be alleviated by adjusting the FSP parameters, but could not be completely eliminated under investigated FSP parameters. The FSP NAB exhibited significantly improved hardness, tensile strength, and ductility compared to the base metal. When the NAB was subjected to two pass FSP, its microstructure was further homogenized, resulting in apparently increased ductility with similar hardness and tensile strength. (C) 2009 Elsevier B.V. All rights reserved.
部门归属	[ni, d. r.; xue, p.; wang, d.; xiao, b. l.; ma, z. y.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china.;ma, zy (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china;zyma@imr.ac.cn
关键词	Friction Stir Processing Bronze Microstructure Mechanical Properties Nickel-aluminum-bronze Nugget Zone Mg Alloy Recrystallization Welds Evolution Corrosion Flow
URL	查看原文
WOS记录号	WOS:000270612100019
引用统计	被引频次：80[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/32217
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	D. R. Ni,P. Xue,D. Wang,et al. Inhomogeneous microstructure and mechanical properties of friction stir processed NiAl bronze[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2009,524(1-2):119-128.
APA	D. R. Ni,P. Xue,D. Wang,B. L. Xiao,&Z. Y. Ma.(2009).Inhomogeneous microstructure and mechanical properties of friction stir processed NiAl bronze.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,524(1-2),119-128.
MLA	D. R. Ni,et al."Inhomogeneous microstructure and mechanical properties of friction stir processed NiAl bronze".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 524.1-2(2009):119-128.