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Effect of High-Temperature Thermomechanical Treatments on Microstructure and Mechanical Properties of a High-Nitrogen Austenitic Steel.
- Source :
-
AIP Conference Proceedings . 2019, Vol. 2167 Issue 1, p020305-1-020305-4. 4p. 3 Diagrams. - Publication Year :
- 2019
-
Abstract
- The features of microstructure and mechanical properties of a high-nitrogen austenitic steel after high-temperature thermomechanical treatments with plastic deformation after heating to T = 1100 and 600°C are investigated. It is shown that these treatments result in plastic deformation in localized areas of the material and fragmented microstructure with low- and high-angle misorientation boundaries. Plastic deformation develops more intensively in δ-ferrite than in austenite. An additional warm deformation at T = 600°C (after deformation at T = 1100°C) contributes to more intensive fragmentation of the austenite microstructure. The structural states formed after high-temperature thermomechanical treatments provide an ≈300 MPa increase in the yield strength of steel compared to the initial values with the relative elongation ≈10%. The issues of strength and plasticity of the high-nitrogen austenitic steel after thermomechanical treatments are discussed. [ABSTRACT FROM AUTHOR]
- Subjects :
- *AUSTENITIC steel
*THERMOMECHANICAL treatment
*MICROSTRUCTURE
*MATERIAL plasticity
Subjects
Details
- Language :
- English
- ISSN :
- 0094243X
- Volume :
- 2167
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- AIP Conference Proceedings
- Publication Type :
- Conference
- Accession number :
- 139830375
- Full Text :
- https://doi.org/10.1063/1.5132172