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Effects of Cold Deformation on Precipitation in Fe-18Cr-12Mn-0.48N High-Nitrogen Austenitic Stainless Steel
- Source :
- Key Engineering Materials. :97-102
- Publication Year :
- 2012
- Publisher :
- Trans Tech Publications, Ltd., 2012.
-
Abstract
- The precipitation behaviors were investigated during isothermally aging at 700°C and 800°C after cold compressed by 30% in thickness in Fe-18Cr-12Mn-0.48N high-nitrogen austenitic stainless steel by using optical microscopy (OM), laser scanning confocal microscopy (LSCM) and transmission electron microscopy (TEM). The results show that precipitation morphology in cold-deformed sample is the same as non-cold-deformed sample, which also displays discontinuous cellular way. Cold deformation accelerates the precipitation of M2N phase. The precipitation occurs at not only grain boundaries but also twin grain boundaries in the experimental steel. In cold-deformed sample, besides the long-strip M2N precipitates, intermetallic phase-σ phase owning bct structure and lattice parameters of a=0.8800nm and c=0.4544nm were observed along grain boundaries and inside the grain.
- Subjects :
- Materials science
Precipitation (chemistry)
Mechanical Engineering
Metallurgy
Intermetallic
engineering.material
Isothermal process
law.invention
Optical microscope
Mechanics of Materials
Transmission electron microscopy
law
High nitrogen
engineering
General Materials Science
Grain boundary
Austenitic stainless steel
Subjects
Details
- ISSN :
- 16629795
- Database :
- OpenAIRE
- Journal :
- Key Engineering Materials
- Accession number :
- edsair.doi...........9a688e70c37c20d30f1ea993c8d1ec92