Mg isotopic heterogeneity, Al-Mg isochrons, and canonical 26 Al/27 Al in the early solar system
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Mg isotopic heterogeneity, Al-Mg isochrons, and canonical Al ⁄Al in the early solar system
There is variability in the Mg isotopic composition that is a reflection of the widespread heterogeneity in the isotopic composition of the elements in the solar system at approximately 100 ppm. Measurements on a single calcium-aluminum-rich inclusion (CAI) gave a good correlation of Mg ⁄ Mg with Al ⁄ Mg, yielding an isochron corresponding to an initial (Al ⁄ Al)o = (5.27 ± 0.18) · 10 and an in...
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www.sciencemag.org (this information is current as of September 1, 2009 ): The following resources related to this article are available online at http://www.sciencemag.org/cgi/content/full/325/5943/985 version of this article at: including high-resolution figures, can be found in the online Updated information and services, http://www.sciencemag.org/cgi/content/full/325/5943/985/DC1 can be fou...
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The evaluation of texture as a function of recrystallization has been characterized for directly cold rolled Al-6Mg, Al-6Mg-0.4Sc and Al-6Mg-0.4Sc-0.2Zr alloys. Samples were annealed isothermally at 400 °C for 1 to 240 minutes to allow recrystallization. Recrystallization kinetics of the alloys is analyzed from the micro-hardness variation. Isothermally annealed samples of aluminum alloys were ...
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Precipitation behaviour of wrought Al-6Mg alloys with ternary scandium and quaternary zirconium and titanium has been studied. Hardness measurements and resistivity studies are employed to assess the precipitation behaviour of scandium doped Al-6Mg alloy without or with quaternary additions of zirconium and titanium. Further, the kinetics of precipitations are studied by differential scanning c...
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ژورنال
عنوان ژورنال: Meteoritics & Planetary Science
سال: 2012
ISSN: 1086-9379
DOI: 10.1111/maps.12014