Effect of Magnetic Field Current on Microstructure and Properties of AZ91 Magnesium Alloy Welded Joint

Yun Hai Su; Jin Liang Lin; Zhi Peng Kan

doi:10.4028/www.scientific.net/AMR.690-693.2570

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 690-693Effect of Magnetic Field Current on Microstructure...

Effect of Magnetic Field Current on Microstructure and Properties of AZ91 Magnesium Alloy Welded Joint

Abstract:

In this investigation, in order to research the influence of magnetic field on microstructure and properties of magnesium alloy welded joint, the AZ91 magnesium alloy plates were welded by GTAW under AC longitudinal magnetic field. The tensile test, EDS and XRD were used to analyze the properties and microstructure of welded joint under different magentic field current. The acting mechanism of magentic field on welded joint was studied. The results show that, the optimal mechanical properties will be obtained when I_m=1A, which the ultimate tensile strength is 270MPa and the elongation precentage is 7.1%.The magnetic field can produce electromagnetic stirring, which can refine crystal grain and improve the solubility of alloy element. The properties of welded joint will been improved by these fine crystal grain.

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Periodical:

Advanced Materials Research (Volumes 690-693)

Pages:

2570-2573

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.690-693.2570

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Online since:

May 2013

Authors:

Yun Hai Su, Jin Liang Lin, Zhi Peng Kan

Keywords:

AC Longitudinal Magnetic Field, Element Distribution, Gas Tungsten Arc Welding (GTAW), Magnesium Alloy, Magnetic Field Current, Properties and Microstructure

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