Comparison of Al-Zn-Mg Alloy P-MIG Welded Joints Filled with Different Wires

Abstract: Three kinds of welding filler wires, named ER5356, ER5087 and ER4043, were used to joint 12 mm thick Al-Zn-Mg alloy plate by the pulsed MIG (P-MIG) welding. The microstructure and mechanical properties of the joints were analyzed and compared. The results showed that the average tensile strengths of the joints filled with ER5356, ER5087 and ER4043 were 294 MPa, 313 MPa and 237 MPa, respectively, and the average elongations were 7.9%, 7.6% and 1.6%, respectively. All the joints’s fracture locations were near the fusion boundary. The microhardness test showed that the locations of the lowest hardness were all in the center of cross section. The results revealed that the weld filler by ER5087 was consist of more columnar crystals of larger grain size, while the weld filled by ER5356 was consist of more equiaxed grains of smaller grain size. The microstructure of the weld by ER4043 was typical eutectic dendrites structure.

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• Location: Deutsche Nationalbibliothek Frankfurt am Main
• Extent: Online-Ressource
• Language: Englisch

References and Relationships

• Bibliographic citation: Comparison of Al-Zn-Mg Alloy P-MIG Welded Joints Filled with Different Wires ; volume:38 ; number:2019 ; year:2019 ; pages:516-524 ; extent:9 ; High temperature materials and processes ; 38, Heft 2019 (2019), 516-524 (gesamt 9)

Contributors, Places and Time

• Creator: Dianlong, Wang ; Guangyun, Diao ; Zhimin, Liang

Further information

• DOI: 10.1515/htmp-2017-0146
• URN: urn:nbn:de:101:1-2501280325298.726853676612
• Rights: Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.