Article (Scientific journals)
Elucidation of the solidification sequence of a complex graphitic HSS alloy under a combined approach of DTA and EBSD analyses
Maurizi-Enrici, Tommaso; Mertens, Anne; Sinnaeve, Mario et al.
2019In Journal of Thermal Analysis and Calorimetry, 1 (15)
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This is a post-peer-review, pre-copyedit version of an article published in Journal of Thermal Analysis and Calorimetry. The final authenticated version is available online at: http://dx.doi.org/10.1007/s10973-019-09093-9
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Keywords :
Solidification sequence; High Speed Steel; Free Graphite; Differential Thermal Analysis (DTA); Electron Back-Scattered Diffraction (EBSD); Carbides characterization
Abstract :
[en] In this work, a complex Graphitic High Speed Steel (Gr-HSS) obtained from a spin casting process that allows high cooling rates during solidification is considered. Differential Thermal Analysis is carried out at a moderate and constant heating scan speed until complete remelting. This allows to link each of the peaks observed in the DTA curve to a related phase transformation that had occurred during the initial solidification in the spin casting process. The phases which were formed during the spin casting process, especially solidification carbides, are characterized through light microscopy (distribution), scanning electron microscopy (morphology) either associated with EDS (chemical composition), or associated with EBSD (crystal lattice identification). A discussion is opened about the influence of solidification rates on both supersaturation and lattice distortions in the solidification carbides. The combination of reverse DTA analysis and SEM/EDS-EBSD applied here to the complex Gr-HSS alloy constitutes a relevant approach to understand the phase transformations during complex casting processes where relatively high solidification rates are achieved.
Disciplines :
Materials science & engineering
Author, co-author :
Maurizi-Enrici, Tommaso  ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Science des matériaux métalliques
Mertens, Anne  ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Science des matériaux métalliques
Sinnaeve, Mario ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Metallic materials for additive manufacturing
Tchuindjang, Jérôme Tchoufack  ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Science des matériaux métalliques
Language :
English
Title :
Elucidation of the solidification sequence of a complex graphitic HSS alloy under a combined approach of DTA and EBSD analyses
Publication date :
04 December 2019
Journal title :
Journal of Thermal Analysis and Calorimetry
ISSN :
1388-6150
eISSN :
1572-8943
Publisher :
Akademiai Kiado, Hungary
Volume :
1
Issue :
15
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
ENDEFINU project – Grant Number 6929
Commentary :
This is a post-peer-review, pre-copyedit version of an article published in Journal of Thermal Analysis and Calorimetry. The final authenticated version is available online at: http://dx.doi.org/10.1007/s10973-019-09093-9
Available on ORBi :
since 25 November 2019

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