Published November 6, 1978 | Version v1
Journal article Metadata-only

New type of M23C6 carbide precipitation in an austenitic stainless steel containing Nb

Creators

Description

It was observed that a new type of thin plate precipitation of M23C6 carbide occurs in the austenitic stainless steel, 16 Cr-16 Ni-0.8 Nb. The precipitate is formed in the region near the non-dissolved NbC particle by ageing of long duration at 8000C. It seems that the NbC particle is decomposed during the precipitation of M23C6 carbides and that carbon atoms liberated by this decomposition induce the formation of the M23C6 thin plate. This plate is constituted of a large (110) plane whose edges are limited by (111) planes

Abstract (French)

On a observe une forme de precipitation inhabituelle de fines plaquettes de carbure M23C6 (riche en chrome) dans l'acier inoxydable austenitique, 16 Cr-16 Ni-0,8 Nb. Ces plaquettes de M23C6 se forment autour des particules de NbC non dissoutes par le traitement de revenu de longue duree a 8000C. Il semble que les particules de NbC se decomposent au cours de la precipitation des carbures M23C6 et que le carbone libere par la decomposition du NbC favorise la formation des plaquettes de M23C6. Ces dernieres se developpent dans les plans (110) et leurs cotes sont paralleles aux plans (111)

Additional details

Additional titles

Original title (French)
Nouveau mode de precipitation du carbure de type M

Publishing Information

Journal Title
C. R. Hebd. Seances Acad. Sci., Ser. C
Journal Volume
287
Journal Issue
12
Series
C. R. Hebd. Seances Acad. Sci., Ser. C.
Journal Page Range
487-490
ISSN
0567-6541

INIS

Country of Publication
France
Country of Input or Organization
France
INIS RN
11510462
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
AUSTENITIC STEELS; CARBIDES; ELECTRON DIFFRACTION; MICROSTRUCTURE; NIOBIUM ADDITIONS; PRECIPITATION; STAINLESS STEELS
Descriptors DEC
ALLOYS; CARBON ADDITIONS; CARBON COMPOUNDS; CHROMIUM ALLOYS; COHERENT SCATTERING; CORROSION RESISTANT ALLOYS; CRYSTAL STRUCTURE; DIFFRACTION; IRON ALLOYS; IRON BASE ALLOYS; SCATTERING; SEPARATION PROCESSES; STEELS; TRANSITION ELEMENT ALLOYS