Solidification morphology and phase selection in drop-tube processed Ni–Fe–Si intermetallics
نویسندگان
چکیده
منابع مشابه
Solidification morphology and phase selection in drop-tube processed Ni-Fe-Si intermetallics
Drop-tube processing was used to rapidly solidify droplets of Ni64.7Fe10Si25.3 and Ni59.7Fe15Si25.3 alloys. In the larger droplets, and therefore at low cooling rates, only two phases, け-Ni31Si12 and く1-Ni3Si were observed. Conversely, in the smaller droplets, and therefore at higher cooling rates, the metastable phase Ni25Si9 was also observed. The critical cooling rate for the formation of Ni...
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Rapid solidification experiments have been performed on an Ni-25.3 at.% Si alloy using drop tube techniques. The dominant phase formed is found to be Ni25Si9, with Ni31Si12 and く1-Ni3Si also being present. SEM and TEM analysis revealed a novel eutectic structure consisting of lamellar of metastable Ni25Si9 and く1-Ni3Si, the width of these being around 200 nm and 20 nm respectively. This result ...
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ژورنال
عنوان ژورنال: Intermetallics
سال: 2015
ISSN: 0966-9795
DOI: 10.1016/j.intermet.2015.01.006