Microstructural characterization of arc-melted and directionally solidified near-eutectic molybdenum–silicon–boron alloys

Microstructural characterization of arc-melted and directionally solidified near-eutectic molybdenum–silicon–boron alloys

Samples of near-eutectic Mo–Si–B alloys, with the nominal composition corresponding to the Moss + Mo3Si + T2 eutectic area, were prepared by arc-melting or by crucible-free zone-melting methods (directional solidification). In the directionally solidified (DSed) alloy, the volume fraction of the Mos...

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Veröffentlicht in:Intermetallics 2021-05, Vol.132, p.107131, Article 107131
Hauptverfasser: Zhu, Linye, Ida, Shuntaro, Hasemann, Georg, Krüger, Manja, Yoshimi, Kyosuke
Format: Artikel
Sprache:eng
Schlagworte:
Alloys
Boron alloys
Crucibles
Directional solidification
Electric arc melting
Eutectics
Intermetallics
Microstructure
Molybdenum base alloys
Preferred orientation
Scanning electron microscopy
Silicon
Solidification
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Zusammenfassung:Samples of near-eutectic Mo–Si–B alloys, with the nominal composition corresponding to the Moss + Mo3Si + T2 eutectic area, were prepared by arc-melting or by crucible-free zone-melting methods (directional solidification). In the directionally solidified (DSed) alloy, the volume fraction of the Moss + Mo3Si + T2 eutectic cells appeared to increase compared with that of arc-melted (AMed) alloy, and well-aligned and rod-shaped Moss and T2 phases were formed in a Mo3Si matrix of the eutectic cells. In the AMed alloy, only the T2 phase showed a
ISSN:0966-9795
1879-0216
DOI:10.1016/j.intermet.2021.107131