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The Morphological Properties and Microhardness of As-Cast and Melt-Spun Al–5Zn–2.5Mg Alloy

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Abstract

The morphologics and microhardness properties of the conventional solidified Al–5Zn–2.5Mg alloy was obtained by casting 99.99% pure Al, Zn and Mg by using a vacuum furnace and then the rapidly solidified ribbons specimens for the same alloy that was produced by using the melt-spinning technique with different wheel speeds of (10, 50 and 80) m/s. These samples have been studied by using the scanning electron microscopy, X-ray diffraction, differential thermal analysis, Vickers microhardness tester with various peak loads at room temperature. Moreover, the conventional solidified and the rapid solidified samples have been tested under a universal testing machine for the tensile tests. The scanning electron microscopy analysis shows that the conventional solidified samples have a dendritic α-Al solid solution and non-equilibrium phases. The X-ray diffraction patterns for the conventional solidified samples revealed three phases namely, two intermetallic phases (Al12Mg and MgZn2) and the α-Al phase. While no peaks corresponding to the intermetallic phases for the rapid solidified ribbons obtained by 50 and 80 m/s wheel speeds. The melting temperature for the rapid solidified ribbons of 10, 50 and 80 m/s wheel speeds were 660, 660 and 662 °C, respectively. The tensile stress curves show that there are huge enhancements in the rapid solidified samples than those in the conventional solidified samples.

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Acknowledgements

This work was supported by Erciyes University Research Fund, Grant No: FYL-2017-7348 and Çankırı Karatekin University Research Fund, Grant No: FF200217B31.

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Authors and Affiliations

  1. Department of Automotive Technology, Kayseri University, 38039, Kayseri, Turkey

    Ercan Karaköse

  2. Department of Physics, Institute of Science, Erciyes University, 38039, Kayseri, Turkey

    Ali Mawlood Ibrahim & Mustafa Keskın

  3. Department of Physics, Faculty of Sciences, Erciyes University, 38039, Kayseri, Turkey

    Mustafa Keskın

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  1. Ercan Karaköse
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  2. Ali Mawlood Ibrahim
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  3. Mustafa Keskın
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Correspondence to Ercan Karaköse.

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Karaköse, E., Ibrahim, A.M. & Keskın, M. The Morphological Properties and Microhardness of As-Cast and Melt-Spun Al–5Zn–2.5Mg Alloy. J Inorg Organomet Polym 28, 2645–2652 (2018). https://doi.org/10.1007/s10904-018-0929-1

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  • DOI: https://doi.org/10.1007/s10904-018-0929-1

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