Enhancing forming quality,refining grains,and reducing anisotropy of mechanical properties of WAAM-processed AZ31 alloy by welding torch wobblingOA
The arc oscillation has a significant influence on the forming quality and mechanical properties of wire arc additive manufacturing(WAAM)process of magnesium alloy.In order to enhance the forming quality and mechanical properties of WAAM magnesium alloy components,arc oscillation was formed by wobbling welding torch during the process of WAAM with cold metal transfer method,and the impact of various wobble parameters on the formability,microstructure,and mechanical properties of WAAM-processed AZ31 magnesium alloy was studied.The results show that the WAAM-processed AZ31 alloy has a fully equiaxed crystal structure.Wobbling welding torch can increase the effective wall width and significantly improve the forming quality of WAAM.Arc oscillation induced by wobbling welding torch enhances the stirring effect and constitutional supercooling degree of melt pool and accelerates cooling rate of the WAAM-processed AZ31 alloy,therefore the grains in the deposition zone and the heat-affected zone can be refined.Simultaneously,wobbling welding torch significantly enhances the mechanical properties of the WAAM-processed AZ31 alloy.Compared no wobble with a wobble width of 10 mm and length of 4 mm,the grain sizes of the alloy in the deposition zone and heat-affected zone can be reduced by 12.3% and 14.9%,respectively,and the ultimate tensile strength and elongation in building direction increase from 225 MPa and 15%to 239 MPa and 25%,respectively.In addition,anisotropy of mechanical properties between the building direction and the traveling direction is significantly reduced.This study suggests that by adjusting welding torch wobble parameters during the WAAM of AZ31alloy,it is possible to achieve a synergistic effect that simultaneously enhances the forming quality,reduces the anisotropy of mechanical properties,and improves the mechanical properties of the alloy.
Yi-feng Wang;Zhong-ming Zhang;Chun-jie Xu;Wan-ting Xie;Yi-bo Xue;Shang Sui;Can Guo;Xiang-quan Wu;Sergei Remennik;Dan Shechtman
School of Materials Science and Engineering,Xi’an University of Technology,Xi’an 710048,China Xi’an Shechtman Nobel Prize New Materials Institute,Xi’an 710048,China Xi’an Key Laboratory of Advanced Magnesium Alloy Additive Manufacturing and Precision Forming,Xi’an 710048,ChinaSchool of Materials Science and Engineering,Xi’an University of Technology,Xi’an 710048,China Xi’an Shechtman Nobel Prize New Materials Institute,Xi’an 710048,China Xi’an Key Laboratory of Advanced Magnesium Alloy Additive Manufacturing and Precision Forming,Xi’an 710048,ChinaSchool of Materials Science and Engineering,Xi’an University of Technology,Xi’an 710048,China Xi’an Shechtman Nobel Prize New Materials Institute,Xi’an 710048,China Xi’an Key Laboratory of Advanced Magnesium Alloy Additive Manufacturing and Precision Forming,Xi’an 710048,ChinaSchool of Materials Science and Engineering,Xi’an University of Technology,Xi’an 710048,China Xi’an Shechtman Nobel Prize New Materials Institute,Xi’an 710048,China Xi’an Key Laboratory of Advanced Magnesium Alloy Additive Manufacturing and Precision Forming,Xi’an 710048,ChinaSchool of Materials Science and Engineering,Xi’an University of Technology,Xi’an 710048,China Xi’an Shechtman Nobel Prize New Materials Institute,Xi’an 710048,China Xi’an Key Laboratory of Advanced Magnesium Alloy Additive Manufacturing and Precision Forming,Xi’an 710048,ChinaSchool of Materials Science and Engineering,Xi’an University of Technology,Xi’an 710048,China Xi’an Shechtman Nobel Prize New Materials Institute,Xi’an 710048,China Xi’an Key Laboratory of Advanced Magnesium Alloy Additive Manufacturing and Precision Forming,Xi’an 710048,ChinaSchool of Materials Science and Engineering,Xi’an University of Technology,Xi’an 710048,China Xi’an Shechtman Nobel Prize New Materials Institute,Xi’an 710048,China Xi’an Key Laboratory of Advanced Magnesium Alloy Additive Manufacturing and Precision Forming,Xi’an 710048,ChinaSchool of Materials Science and Engineering,Xi’an University of Technology,Xi’an 710048,China Xi’an Shechtman Nobel Prize New Materials Institute,Xi’an 710048,China Xi’an Key Laboratory of Advanced Magnesium Alloy Additive Manufacturing and Precision Forming,Xi’an 710048,ChinaXi’an Shechtman Nobel Prize New Materials Institute,Xi’an 710048,China Center for Nanoscience&Nanotechnology,Hebrew University of Jerusalem,Edmond J.Safra Campus 91904,Jerusalem,IsraelSchool of Materials Science and Engineering,Xi’an University of Technology,Xi’an 710048,China Xi’an Shechtman Nobel Prize New Materials Institute,Xi’an 710048,China Department of Materials Science and Engineering,Technion-Israel Institute of Technology,Haifa 32000,Israel
矿业与冶金
AZ31 alloywire arc additive manufacturing(WAAM)welding torch wobbleformabilitymicrostructureanisotropy of mechanical properties
《China Foundry》 2026 (4)
P.613-623,11
the support from the Natural Science Basic Research Program of Shaanxi(2023-JC-YB-412)the International Science and Technology Cooperation Program of Shaanxi Province(2023-GHZD-50)the Project of Qin Chuangyuan“Scientist+Engineer”Team Construction,the Key Research and Development Plan of Shaanxi Province(S2023-YF-QCYK-0001-237)the Project of Major Innovation Platforms for Scientific and Technological and Local Transformation of Scientific and Technological Achievements of Xi''an(20GXSF0003)the Project of Major Scientific and Technological Achievements Local Transformation of Xi''an(2022JH-ZDZH-0039)the Scientific Research Program Funded by Shaanxi Provincial Education Department(22JK0479)the Natural Science Foundation of Shaanxi Province(2023-JC-QN-0573)the Science and Technology Plan Project of Xi''an(2022JH-RYFW-0026)。
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