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| Ertürk, Emre |
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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
Solidification, microstructure, and mechanical properties of the as-cast ZRE1 magnesium alloy with different praseodymium contents
Abstract
<p>The influence of praseodymium (Pr) content on the solidification characteristics, microstructure, and mechanical properties of ZRE1 magnesium (Mg) cast alloy was investigated. The obtained solidification parameters showed that Pr strongly affected the solidification time, leading to refinement of the microstructure of the alloys. When the freezing time was reduced to approximately 52 s, the grain size decreased by 12%. Mg12Zn (Ce,Pr) was formed as a new phase upon the addition of Pr and was detected via X-ray diffraction analysis. The addition of Pr led to a substantial improvement in mechanical properties, which was attributed to the formation of intermetallic compounds; the ultimate tensile strength and yield strength increased by approximately 10% and 13%, respectively. Pr addition also refined the microstructure, and the hardness was recovered. The results herein demonstrate that the mechanical properties of Mg alloys are strongly influenced by their microstructure characteristics, including the grain size, volume fraction, and distribution of intermetallic phases.</p>