Laser-induced microstructural development and phase evolution in magnesium alloy
Li, Z. L.
Zheng, H. Y.
Date of Issue2013-08-23
School of Mechanical and Aerospace Engineering
Singapore Institute of Manufacturing Technology
Secondary phase plays an important role in determining microstructures and properties of magnesium alloys. This paper focuses on laser-induced microstructure development and secondary phase evolution in AZ91D Mg alloy studied by SEM, TEM and EDS analyses. Compared to bulk shape and lamellar structure of the secondary phase in as-received cast material, rapid-solidified microstructures with various morphologies including nano-precipitates were observed in laser melt zone. Formation mechanisms of microstructural evolution and effect of phase development on surface properties were further discussed.
Journal of Alloys and Compounds
© 2013 Elsevier B.V. This is the author created version of a work that has been peer reviewed and accepted for publication by Journal of Alloys and Compounds, Elsevier B.V. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [http://dx.doi.org/10.1016/j.jallcom.2013.08.030].