Discovery of a meta-stable Al-Sm phase with unknown stoichiometry using a genetic algorithm

Journal Article · Thu Jul 10 00:00:00 EDT 2014 · Scripta Mater.

DOI:https://doi.org/10.1016/j.scriptamat.2014.02.019· OSTI ID:1132640

Zhang, Feng; McBrearty, Ian; Ott, R. T.; Park, E.; Mendelev, Mikhail I.; Kramer, M. J.; Wang, Cai-Zhuang; Ho, Kai-Ming ^[1]

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1. Iowa State

Unknown crystalline phases observed during the devitrification process of glassy metal alloys significantly limit our ability to understand and control phase selection in these systems driven far from equilibrium. Here, we report a new meta-stable Al₅Sm phase identified by simultaneously searching Al-rich compositions of the Al–Sm system, using an efficient genetic algorithm. The excellent match between calculated and experimental X-ray diffraction patterns confirms that this new phase appeared in the crystallization of melt-spun Al₉₀Sm₁₀ alloys.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
• Sponsoring Organization: DOE - BASIC ENERGY SCIENCES
• OSTI ID: 1132640
• Journal Information: Scripta Mater., Vol. 81, Issue 06, 2014
• Country of Publication: United States
• Language: ENGLISH