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Sheggaf, Z. M.
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Publications (5/5 displayed)
- 2017Effect of rare earth addition on solidification characteristics and microstructure of ZRE1 magnesium cast alloycitations
- 2017Effect of praseodymium and erbium additions on solidification characteristics, microstructure and mechanical properties of as-cast ZRE1 magnesium alloycitations
- 2017Solidification, microstructure, and mechanical properties of the as-cast ZRE1 magnesium alloy with different praseodymium contentscitations
- 2016Effects of gadolinium on microstructure and hardness of Mg-Zn-Ce-Zr cast alloy
- 2016Effect of praseodymium addition on microstructure and hardness of cast ZRE1 magnesium alloy
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article
Effect of rare earth addition on solidification characteristics and microstructure of ZRE1 magnesium cast alloy
Abstract
<p>The thermal parameters of ZRE1 cast alloy with 1.0 wt.% of praseodymium (Pr) and 1.0 wt.% of erbium (Er) were evaluated by the computer-aided cooling curve thermal analysis (CA-CCTA), whereas the microstructure analysis was investigated by the optical microscope and field emission scanning electron microscopy. The results of the cooling curve and microstructure analyses showed that Pr and Er reduced the grain size. The thermal analysis result recorded a faster freezing time and lower solidification temperature with Pr and Er additions and 15.5 and 11.2% decrease in the grain size, respectively. Scanning electron microscopy results showed that Er formed a granular particles of Er-containing phases existed in the α-Mg matrix, while Pr formed Mg–Zn–Pr–Ce phase with secondary phase which distributed along the grain boundaries.</p>