Effect of Rotation Rate on Microstructures and Mechanical Properties of FSW Mg-Zn-Y-Zr Alloy Joints

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	Effect of Rotation Rate on Microstructures and Mechanical Properties of FSW Mg-Zn-Y-Zr Alloy Joints
	G. M. Xie; Z. Y. Ma; Z. A. Luo; P. Xue; G. D. Wang
	2011
发表期刊	Journal of Materials Science & Technology
ISSN	1005-0302
卷号	27 期号:12 页码:1157-1164
摘要	Friction stir welding (FSW) of Mg-Zn-Y-Zr plates with 6 mm in thickness was successfully carried out under a wide range of rotation rates of 600-1200 r/min with a constant traverse speed of 100 mm/min. After FSW, the coarse grains in the parent material (PM) were changed into fine equiaxed recrystallized grains at the'nugget zone (NZ). Furthermore, the coarse Mg-Zn-Y particles (W-phase) were broken up and dispersed homogenously into the Mg matrix. With increasing rotation rates, the size of the W-phase particles at the NZ significantly decreased, but the recrystallized grain size tended to increase. The hardness values of the NZs for all the FSW joints were higher than those of the PM, and the lowest hardness values were detected in the heat affected zone (HAZ). The fracture occurred in the thermo-mechanical affected zone (TMAZ) on the advancing side for all the FSW joints in the tensile test, due to the incompatibility of the plastic deformation between the NZ and TMAZ caused by remarkably different orientation of grains and W-phase particles. The strength of FSW joint reaches 90% of that of its PM.
部门归属	[xie, g. m.; luo, z. a.; wang, g. d.] northeastern univ, state key lab rolling & automat, shenyang 110819, peoples r china. [ma, z. y.; xue, p.] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china.;xie, gm (reprint author), northeastern univ, state key lab rolling & automat, shenyang 110819, peoples r china;xiegm@ral.nen.edu.cn
关键词	Friction Stir Welding Magnesium Alloys Microstructure Mechanical Property Welded Zk60 Alloy Magnesium Alloy Friction Evolution Recrystallization Texture Speed
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WOS记录号	WOS:000299352800012
引用统计	被引频次：28[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/321006/30788
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	G. M. Xie,Z. Y. Ma,Z. A. Luo,et al. Effect of Rotation Rate on Microstructures and Mechanical Properties of FSW Mg-Zn-Y-Zr Alloy Joints[J]. Journal of Materials Science & Technology,2011,27(12):1157-1164.
APA	G. M. Xie,Z. Y. Ma,Z. A. Luo,P. Xue,&G. D. Wang.(2011).Effect of Rotation Rate on Microstructures and Mechanical Properties of FSW Mg-Zn-Y-Zr Alloy Joints.Journal of Materials Science & Technology,27(12),1157-1164.
MLA	G. M. Xie,et al."Effect of Rotation Rate on Microstructures and Mechanical Properties of FSW Mg-Zn-Y-Zr Alloy Joints".Journal of Materials Science & Technology 27.12(2011):1157-1164.