VAN LANDEGHEM, Hugo; GOUNÉ, Mohamed; REDJAÏMIA, Abdelkrim

doi:10.1002/srin.201100264

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VAN LANDEGHEM, Hugo
Institut Jean Lamour [IJL]

GOUNÉ, Mohamed
ArcelorMittal Maizières Research SA
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

REDJAÏMIA, Abdelkrim
Institut Jean Lamour [IJL]

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Steel Research International. 2012, vol. 83, n° 6, p. 590-593

Wiley

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This paper presents the investigation of the behavior of a Fe-1.5 wt% Si thin sheet upon plasma-assisted nitriding at 570°C. It had been confirmed that a very fine and intense precipitation of amorphous silicon nitride occurs as nitrogen diffuses into the sheet. The precipitates, the size of which is comprised between several and several tens of nanometer, display a cubic morphology in spite of their amorphous structure. These cubes adopt a particular morphology in relation to the matrix with their faces parallel to the {100} plane family. These precipitates cause a notable hardening of the alloy and it was possible to harden a 1 mm sheet across its whole thickness in under 8 h.< Leer menos

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Precipitation

Silicon nitride

Amorphous

Morphology

Composite

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Investigation of a ferrite/silicon nitride composite concept aimed at automotive applications

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