Metastable microstructures at the interface between AISI 321 steel and molten aluminum during hot-dip aluminizing

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dc.contributor.authorHuilgol, P.
dc.contributor.authorUdupa, K.R.
dc.contributor.authorBhat, K.U.
dc.date.accessioned2026-02-05T09:31:06Z
dc.date.issued2018
dc.description.abstractThe microstructure at the interface between AISI 321 stainless steel and molten aluminum was investigated which occurs during the process of hot-dip aluminizing. Microstructural characterization was carried out by scanning electron microscopy, transmission electron microscopy and X-ray diffraction. The study revealed the formation of metastable FeAl<inf>m</inf> and multiple twinned Al<inf>13</inf>Fe<inf>4</inf> phases at the interface between steel and aluminum. Multiple twinned Al<inf>13</inf>Fe<inf>4</inf> phase exhibits pseudo tenfold electron diffraction pattern. Another metastable phase Al<inf>3</inf>(NiFe) with an orthorhombic structure was formed as one of the eutectic phase mixture in the solidified aluminum topcoat. The Al<inf>3</inf>(NiFe) phase in the eutectic shares crystallographic orientation relationship with the Al matrix. Metastable intermetallic phases are being reported for the first time during hot-dip aluminizing. © 2018 Elsevier B.V.
dc.identifier.citationSurface and Coatings Technology, 2018, 348, , pp. 22-30
dc.identifier.issn2578972
dc.identifier.urihttps://doi.org/10.1016/j.surfcoat.2018.05.013
dc.identifier.urihttps://idr.nitk.ac.in/handle/123456789/25043
dc.publisherElsevier B.V.
dc.subjectAluminum
dc.subjectAluminum alloys
dc.subjectAluminum coated steel
dc.subjectBinary alloys
dc.subjectEutectics
dc.subjectHigh resolution transmission electron microscopy
dc.subjectInterfaces (materials)
dc.subjectIntermetallics
dc.subjectMetastable phases
dc.subjectMicrostructure
dc.subjectPhase interfaces
dc.subjectScanning electron microscopy
dc.subjectStainless steel
dc.subjectTransmission electron microscopy
dc.subject321 Stainless Steel
dc.subjectCrystallographic orientation relationships
dc.subjectHot dip aluminizing
dc.subjectIntermetallic phasis
dc.subjectMetastable microstructure
dc.subjectMicro-structural characterization
dc.subjectOrthorhombic structures
dc.subjectScanning electrons
dc.subjectAustenitic stainless steel
dc.titleMetastable microstructures at the interface between AISI 321 steel and molten aluminum during hot-dip aluminizing

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