Fabrication of Mg Alloy Single Crystals Containing Rare Earth Elements and their Mechanical Behavior

Abstract:

Single crystals of Magnesium alloys such as Mg-1Zn-0.5Y, Mg-0.1Y, and Mg-0.1Ce alloys were fabricated in this study by employing the modified Bridgman method. To determine the exact orientation of crystals, pole figure measurement using X-ray diffraction was carried out on each single crystal. Hardness and compression tests were conducted followed by subsequent recrystallization annealing. Recrystallization behavior of Mg alloy single crystals has also been investigated. Fabricated single crystals were deformed in compression mode by 30% reduction. Annealing treatment has been conducted on these samples at temperatures of 300°C for various times from 1 to 20 mins. The microstructure observation and hardness measurement conducted on the recrystallized specimens revealed that static recrystallization of ternary alloy single crystal was very slow, while recrystallization behavior of binary alloy single crystals appeared to be very fast.

• Periodical: Materials Science Forum (Volumes 783-786)
• Pages: 380-383
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.783-786.380
• Online since: May 2014
• Authors: Jung Ho Moon*, Tae Kwon Ha
• Keywords: Bridgman Method, Compression, Hardness, Magnesium, Mg-Rare Earth Alloys

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