Laser-induced microstructural development and phase evolution in magnesium alloy

Laser-induced microstructural development and phase evolution in magnesium alloy

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 structur...

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Bibliographic Details
Main Authors: Guan, Yingchun, Zhou, Wei, Li, Z. L., Zheng, H. Y.
Other Authors: School of Mechanical and Aerospace Engineering
Format: Article
Language:English
Published: 2016
Subjects:
Magnesium alloy
Precipitation
Rapid solidification
Laser processing
Secondary phase
Online Access:https://hdl.handle.net/10356/82235
http://hdl.handle.net/10220/39817
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Institution: Nanyang Technological University
Language: English
Description
Summary: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.

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