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Formation of a metastable ferromagnetic T phase during containerless melt processing and rapid quenching in Mn-AI-C alloys

Y. J. Kim, J. H. Perepezko

1992enferromagneticmelt processingquenchingMn-Al-Calloys

Abstract

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Solidification of selected Mn-Al-C alloys during containerless levitation and rapid quenching has yielded the first report for a ferromagnetic metastable T (L1,) phase formed directly from the melt. The objective of this research was to investigate the solidification pathways of Mn-Al-C alloys and the influence of undercooling on phase formation. The methodology involved differential thermal analysis and x-ray diffraction examination to evaluate the effects of various carbon content on phase development. Results indicated that the amount of undercooling required to produce the metastable ferromagnetic T phase was approximately 470 K for a specific alloy composition, with a transition to y2 phase formation occurring at higher carbon content. The study concludes that the high liquid undercooling, which is vital for nucleating the metastable T phase from the melt, can be facilitated by containerless processing techniques.

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Cite This Work

@article{1ade89f4-a2e9-460b-a1cb-6579d19cb26c,
  title={Formation of a metastable ferromagnetic T phase during containerless melt processing and rapid quenching in Mn-AI-C alloys},
  author={Y. J. Kim and J. H. Perepezko},
  year={1992},
  language={en}
}
TY  - JOUR
TI  - Formation of a metastable ferromagnetic T phase during containerless melt processing and rapid quenching in Mn-AI-C alloys
AU  - Y. J. Kim
AU  - J. H. Perepezko
PY  - 1992
LA  - en
ER  -

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