Mechanism of the Flux Improving the Microstructure and Mechanical Properties of AZ91D Magnesium Alloy

Abstract:

The microstructures and mechanical properties of AZ91D magnesium alloy produced by two kind of fluxes were analyzed by using mechanical performance testing machine, optical microscope, differential thermal analysis (DTA), X-ray diffraction(XRD), scanning electron microscope（SEM）and energy dispersive spectrometer(EDS) analysis, etc.. The results show that the comprehensive properties of AZ91D magnesium alloy produced by the new flux named NF were better than traditional flux named RJ-2. Phase Mg₁₇Al₁₂ was improved enormously. In addition, not only the nuclear particle A1₄C₃ was formed, but also the grain of the alloy was refined remarkably，and the σ_b，σ_s and δ were increased eventually. The tensile fracture surface was made of deeper dimples with rolling patterns, which was relevant to the smaller microstructure.

• Periodical: Advanced Materials Research (Volumes 194-196)
• Pages: 1309-1313
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.194-196.1309
• Online since: February 2011
• Authors: Zhi Xiang Wang, Yang Liu, Ya Ting Le, Feng Liu
• Keywords: Action Mechanism Analysis, AZ91D Magnesium Alloy, Flux

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