NDLI: Precipitation of Second Phases in High-Interstitial-Alloyed Austenitic Steel

Content Provider	Springer Nature Link
Author	Lee, Tae Ho Ha, Heon Young Kim, Sung Joon
Copyright Year	2011
Abstract	The precipitation reaction of an austenitic stainless steel containing N + C was investigated using transmission electron microscopy. The main precipitate formed during isothermal aging at 1123 K (850 °C) was M$_{23}$C$_{6}$ carbide, and its morphology gradually changed in a sequence of intergranular (along grain boundary) → cellular (or discontinuous) → intragranular (within grain interior) form with aging time. Irrespective of different morphologies, the M$_{23}$C$_{6}$ was consistently related to austenite matrix in accordance with the cube-on-cube orientation relationship. Based on the analysis of electron diffraction, two variants of intragranular M$_{23}$C$_{6}$ were identified, and they were related to each other by twin relation. Prolonged aging produced other types of precipitates—the rod-shaped Cr$_{2}$N and the coarse irregular intermetallic sigma phase. The similarities and differences in precipitation behavior between N only and N + C alloyed austenitic stainless steels are briefly discussed.
Starting Page	3543
Ending Page	3548
Page Count	6
File Format	PDF
ISSN	10735623
Journal	Metallurgical and Materials Transactions A
Volume Number	42
Issue Number	12
e-ISSN	15431940
Language	English
Publisher	Springer US
Publisher Date	2011-10-12
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Physical Chemistry Metallic Materials Ceramics, Glass, Composites, Natural Methods Structural Materials Materials Science
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Metals and Alloys Condensed Matter Physics

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