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Enhancing strength, ductility, and fatigue performance of Al-Zn-Mg-Cu-Sc-Zr alloy using a hybrid approach: Wire-arc directed energy deposition and interlayer friction stir processing

文献类型：期刊论文

作者Guo, Xinpeng1; Ni, Dingrui3; Li, Huijun1; Xue, Peng3; Xu, Rongzheng2; Pan, Zengxi1; Zhou, Siyu2; Ma, Zongyi3
刊名JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
出版日期2023-12-01
卷号322页码:14
关键词Wire-arc directed energy deposition Al-Zn-Mg-Cu-Sc-Zr alloy Friction stir processing Microstructure Mechanical property Fatigue property
ISSN号0924-0136
DOI10.1016/j.jmatprotec.2023.118173
通讯作者Li, Huijun(huijun@uow.edu.au) ; Xue, Peng(pxue@imr.ac.cn)
英文摘要Porosity defects are the main issues faced by aluminum alloys manufactured by wire-arc directed energy deposition (WA-DED), which seriously affect the mechanical properties of WA-DED aluminum alloys, especially the fatigue properties. Thus far, there is still no effective solution for the elimination of porosity in high-strength WA-DED aluminium alloys. In this study, an innovative hybrid WA-DED + interlayer friction stir processing (FSP) method was applied to successfully fabricate thick-walled Al-Zn-Mg-Cu-Sc-Zr aluminum alloy component with enhanced strength-ductility and fatigue properties by utilizing a custom 7B55-Sc wire. The porosity defects caused by the WA-DED process were significantly reduced in the FSP effective zone, and the original continuous grain boundary eutectic structures were broken up and dispersed along the grain boundaries. The grains were also further refined with an average size of about 1.1 +/- 0.2 mu m in the stirring zone (SZ) and 1.6 +/- 0.3 mu m in the overlapping SZ. The nanoscale intragranular precipitates (IGPs) were mostly composed of both rod-like eta Mg(Zn,Cu,Al)2 phases and secondary Al3(Sc, Zr) phases. The yield strength (YS), ultimate tensile strength (UTS) and uniform elongation (EL) in the horizontal and vertical directions were all substantially improved comparing with the WA-DED 7B55-Sc component, especially in the horizontal direction, reaching 387 +/- 7 MPa, 511 +/- 15 MPa and 14.6 +/- 0.5%, respectively. The fatigue property after 1 x 107 cycles for the WA-DED + interlayer FSP 7B55-Sc sample was significantly increased by 81%, reaching 170 MPa in vertical direction compared to 100 MPa of the WA-DED 7B55-Sc component.
资助项目China Scholarship Council[202208200005] ; Liaoning Province Excellent Youth Foundation[2021-YQ-01] ; Youth Innovation Promotion Association of the Chi- nese Academy of Sciences[Y2021061]
WOS研究方向Engineering ; Materials Science
语种英语
WOS记录号WOS:001088955300001
出版者ELSEVIER SCIENCE SA
资助机构China Scholarship Council ; Liaoning Province Excellent Youth Foundation ; Youth Innovation Promotion Association of the Chi- nese Academy of Sciences
源URL[http://ir.imr.ac.cn/handle/321006/177827]  
专题金属研究所_中国科学院金属研究所
通讯作者Li, Huijun; Xue, Peng
作者单位1.Univ Wollongong, Sch Mech Mat & Mechatron & Biomed Engn, Wollongong, NSW 2522, Australia
2.Shenyang Aerosp Univ, Sch Mat Sci & Engn, Shenyang 110136, Peoples R China
3.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China
推荐引用方式
GB/T 7714		 Guo, Xinpeng,Ni, Dingrui,Li, Huijun,et al. Enhancing strength, ductility, and fatigue performance of Al-Zn-Mg-Cu-Sc-Zr alloy using a hybrid approach: Wire-arc directed energy deposition and interlayer friction stir processing[J]. JOURNAL OF MATERIALS PROCESSING TECHNOLOGY,2023,322:14.
APA Guo, Xinpeng.,Ni, Dingrui.,Li, Huijun.,Xue, Peng.,Xu, Rongzheng.,...&Ma, Zongyi.(2023).Enhancing strength, ductility, and fatigue performance of Al-Zn-Mg-Cu-Sc-Zr alloy using a hybrid approach: Wire-arc directed energy deposition and interlayer friction stir processing.JOURNAL OF MATERIALS PROCESSING TECHNOLOGY,322,14.
MLA Guo, Xinpeng,et al."Enhancing strength, ductility, and fatigue performance of Al-Zn-Mg-Cu-Sc-Zr alloy using a hybrid approach: Wire-arc directed energy deposition and interlayer friction stir processing".JOURNAL OF MATERIALS PROCESSING TECHNOLOGY 322(2023):14.

入库方式： OAI收割

来源：金属研究所

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