Influence of microstructural evolution on tensile properties of friction stir welded joint of rolled SiCp/AA2009-T351 sheet

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	Influence of microstructural evolution on tensile properties of friction stir welded joint of rolled SiCp/AA2009-T351 sheet
	D. R. Ni; D. L. Chen; D. Wang; B. L. Xiao; Z. Y. Ma
	2013
发表期刊	Materials & Design
ISSN	0261-3069
卷号	51 页码:199-205
摘要	To elucidate the intrinsic factors which decreased the strength and ductility of friction stir welded (FSW) joints of precipitation-strengthened aluminium matrix composites, 3 mm thick rolled 17 vol.% SiCp/AA2009 composite sheet in T351 condition was subjected to FSW and detailed microstructure examinations. The microstructure of the base metal was characterized by high dislocation density and few precipitates. After FSW, low dislocation density and a few coarse theta (Al2Cu) precipitates were detected in the nugget zone, whereas a great number of coarse theta and S (Al2CuMg) precipitates and greatly decreased dislocation density were observed in the heat-affected zone (HAZ). Therefore, the HAZ showed the lowest hardness throughout the whole joint and became the weakest region, where fracture occurred during tensile testing. The FSW joint exhibited a good combination of strength and ductility with the ultimate tensile strength, elongation and joint efficiency reaching 443 MPa, 4.7% and 77%, respectively. (c) 2013 Elsevier Ltd. All rights reserved.
部门归属	[ni, d. r. ; wang, d. ; xiao, b. l. ; ma, z. y.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [chen, d. l.] ryerson univ, dept mech & ind engn, toronto, on m5b 2k3, canada. ; 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 Welding Metal-matrix Composites Mechanical Properties Differential Scanning Calorimetry Fractography Metal-matrix Composites Particulate-reinforced Composite Cu-mg Composite Mechanical-properties Tool Wear Aa2009/sic Composites Fatigue Properties Cast Composite Butt Joints Precipitation
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/321006/71414
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	D. R. Ni,D. L. Chen,D. Wang,et al. Influence of microstructural evolution on tensile properties of friction stir welded joint of rolled SiCp/AA2009-T351 sheet[J]. Materials & Design,2013,51:199-205.
APA	D. R. Ni,D. L. Chen,D. Wang,B. L. Xiao,&Z. Y. Ma.(2013).Influence of microstructural evolution on tensile properties of friction stir welded joint of rolled SiCp/AA2009-T351 sheet.Materials & Design,51,199-205.
MLA	D. R. Ni,et al."Influence of microstructural evolution on tensile properties of friction stir welded joint of rolled SiCp/AA2009-T351 sheet".Materials & Design 51(2013):199-205.