Effect of welding parameters on microstructure and mechanical properties of friction stir welded Al-Mg-Er alloy

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	Effect of welding parameters on microstructure and mechanical properties of friction stir welded Al-Mg-Er alloy
	H. L. Hao; D. R. Ni; H. Huang; D. Wang; B. L. Xiao; Z. R. Nie; Z. Y. Ma
	2013
发表期刊	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
ISSN	0921-5093
卷号	559 页码:889-896
摘要	3.7 mm thick cold-rolled Al-Mg-Er alloy plates were friction stir welded (FSW) under rotation rates of 400-1200 rpm and welding speeds of 100-400 mm/min. The influence of tool rotation rate and welding speed on the microstructure and mechanical properties were investigated by means of the optical microscope (OM), X-ray diffraction (XRD), scanning electron microscope (SEM), and hardness and tensile tests. Experimental results revealed that defect-free joints could be obtained under a wide range of parameters except for 800 rpm-400 mm/min. The nugget zones (NZs) exhibited equiaxed recrystallized grains and the grain size increased with increasing the tool rotation rate or decreasing the welding speed. For all FSW joints, the NZs exhibited the lowest hardness due to the annealing softening. All the FSW joints fractured in the NZs. The joint welded at 400 rpm-100 mm/min had the greatest ultimate tensile strength CUTS) of 346 MPa and yield strength (YS) of 218 MPa with a joint efficiency of 73%. In general, increasing the tool rotation rate reduced both UTS and YS of the FSW joints, while increasing the welding speed increased UTS and YS. (C) 2012 Elsevier B.V. All rights reserved.
部门归属	[hao, h. l. ; ni, d. r. ; wang, d. ; xiao, b. l. ; ma, z. y.] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china. [huang, h. ; nie, z. r.] beijing univ technol, coll mat sci & engn, beijing 100124, peoples r china. ; xiao, bl (reprint author), chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china. ; blxiao@imr.ac.cn
关键词	Aluminum Alloys Friction Stir Welding Microstructure Mechanical Properties Aa2219 Aluminum-alloy Tensile Properties Fatigue Properties Fracture-behavior Processing Zone Pin Profile Joints Strength Recrystallization Tool
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/71247
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	H. L. Hao,D. R. Ni,H. Huang,et al. Effect of welding parameters on microstructure and mechanical properties of friction stir welded Al-Mg-Er alloy[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2013,559:889-896.
APA	H. L. Hao.,D. R. Ni.,H. Huang.,D. Wang.,B. L. Xiao.,...&Z. Y. Ma.(2013).Effect of welding parameters on microstructure and mechanical properties of friction stir welded Al-Mg-Er alloy.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,559,889-896.
MLA	H. L. Hao,et al."Effect of welding parameters on microstructure and mechanical properties of friction stir welded Al-Mg-Er alloy".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 559(2013):889-896.