Temperature induced transformation of metastable austenite in a hypereutectic iron-based rapidly solidified powder

Grgac, P.; Kusý, Martin; Čaplovič, Ľubomír; Miglierini, Marcel; Kaňuch, T.; Vitázek, K.

doi:10.1016/j.msea.2006.01.157

Cited by 5 publications

(2 citation statements)

References 12 publications

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“…In the past, Mössbauer effect technique was shown to provide useful information related to thermal stability of metastable austenite in ledeburitic Cr-Mo-V tool steel. [2,3] They were prepared by rapid solidification of powder particles produced by nitrogen gas atomization. Morphological variations of the solidified microstructure were also examined using Mössbauer spectroscopy.…”

Section: Introductionmentioning

confidence: 99%

Structural Characterization of Highly Corrosion-resistant Steel

Lančok¹,

Kmječ²,

Štefánik³

et al. 2015

Croat. Chem. Acta

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Structural features of novel corrosion-resistant LC 200N steel were investigated. Mössbauer spectrometry was chosen as a principal method of investigation. Surface as well as bulk properties were studied using Conversion Electron Mössbauer Spectrometry and transmission technique, respectively. Complex behaviour of magnetic and non-magnetic phases was identified in the samples by these two techniques. Chemical composition was checked by neutron activation analysis and X-ray fluorescence technique. Structural arrangement was studied by scanning electron microscopy with energy dispersive spectrometry and transmission electron microscopy. They unveiled regions with fairly varied Cr concentrations. Basing on a simple model of two different Cr concentrations, the relative areas of the Mössbauer sextets were modelled by a linear combination of two binomial distributions.

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Section: Introductionmentioning

confidence: 99%

Structural Characterization of Highly Corrosion-resistant Steel

Lančok¹,

Kmječ²,

Štefánik³

et al. 2015

Croat. Chem. Acta

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“…The size, morphology, microstructure, and phase composition of the rapidly solidified powder particles and their possible structural transformations are of particular scientific as well as technological importance [5][6][7].…”

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Characterization of rapidly solidified powder of high-speed steel

2009

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Rapidly solidified particles of high-speed steel were classified into several granulometric fractions ranging from less than 25 μm up to more than 160 μm in diameter and studied by transmission and conversion electron Mössbauer spectrometry. The former was applied at 300, 77, and 5 K. Presence of magnetic and a non-magnetic crystallographic phase was observed. They were identified by X-ray diffraction as ferrite (bcc-Fe) and austenite (fcc-Fe), respectively. In addition, M 4 C 3 and M 2 C carbides were found. The magnetic phase diminishes in the bulk of the particles bigger than 63 μm (transmission Mössbauer spectroscopy) and/or 80 μm (X-ray diffraction). Its contribution is higher at the surface of the particles (conversion electron Mössbauer spectrometry). The origin of the non-magnetic phase is not changed even at 5 K. Reasonable agreement is achieved between Mössbauer and X-ray diffraction data as far as the fraction of Fe-containing phases is concerned.

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