Microstructure of super-austenitic steels after long-term annealing
-
Martin Kraus
Abstract
Longevity of materials, especially technological parts, is influenced by microstructure development during long-time annealing of such parts during their industrial service. Important relations between the volume fractions of phases and the time of service, especially the precipitation of intermetallics need to be revealed. The present study describes the time dependence of the structure development of two corrosion resistant steels with chromium content of 27 and 32 wt.% and various additions of nickel, molybdenum, manganese, silicon, copper and nitrogen. The microstructure was studied on samples annealed at 700 °C for 500, 3 188 and 6 170 h, revealing the kinetics of the equilibrium process. The homogeneity of samples was checked before heat treatment. The experimental microstructures are compared with the predicted phase composition. The effect of using different databases is also discussed.
References
[1] M.Svoboda, A.Kroupa, J.Sopoušek, J.Vrestal, P.Miodownik: Z. Metallkd96 (2004) 1025–1030.Search in Google Scholar
[2] N.Saunders, P.Miodownik: CALPHAD – A Comprehensive Guide, Elsevier, London (1998).Search in Google Scholar
[3] J.Romu, H.Hänninen: Mater. Sci. Forum318–320 (1999) 673. 10.4028/www.scientific.net/MSF.318-320.673Search in Google Scholar
[4] A.Kroupa, J.Havránková, M.Coufalová, M.Svoboda, J.Vřešt'ál: J. Phase Equilib.22 (2001) 312. 10.1361/105497101770338824Search in Google Scholar
[5] B.Sundman: Thermo-calc, version M, Royal Institute of Technology, Stockholm (1997).Search in Google Scholar
[6] Thermo-calc, SSOL database.Search in Google Scholar
[7] N.Saunders, Z.Guo, X.Li, A.P.Miodownik, J.-P.Schille: JOM55 (2003) 65.10.1007/s11837-003-0013-2Search in Google Scholar
© 2010, Carl Hanser Verlag, München
Articles in the same Issue
- Contents
- Contents
- Editorial
- IJMR's most downloaded papers from 2008 to the present: a review
- Basic
- Effect of temperature and strain rate on strain hardening and deformation mechanisms of high manganese austenitic steels
- Size effects resulting from local strain hardening; microstructural evaluation of Fe-3% Si and Cu deformed in tension and deep drawing using orientation gradient mapping (OGM)
- Microstructure of super-austenitic steels after long-term annealing
- Investigation of tensile–compressive yield asymmetry and the role of deformation twin in extruded pure magnesium
- Neutron diffraction study on liquid Al–Ni alloys
- Investigation of the atomic structure of molten As–Se alloys using X-ray diffraction
- A theoretical approach to the elastic behaviour of compact and hollow spherical particles reinforced metal-matrix composites
- Applied
- Adsorption of nucleotides on the rutile (110) surface
- Effect of cyclic heat treatment on the microstructures and mechanical properties of Ti–Si alloys
- Deleterious phases resulting from the induction bending of thick-walled super-duplex pipework
- Steady state creep in a rotating composite disc of variable thickness
- Influence of data conversion methods from torsion tests on the Garofalo equation parameters for a high nitrogen steel
- High-alloy ferritic cast irons with different graphite microstructures for exhaust manifolds and turbocharger housings
- Microstructure and mechanical properties of friction stir butt welded dissimilar pure copper/brass alloy plates
- The heat capacity measurements of CoSb3-based Skutterudite compounds
- DGM News
- DGM News
Articles in the same Issue
- Contents
- Contents
- Editorial
- IJMR's most downloaded papers from 2008 to the present: a review
- Basic
- Effect of temperature and strain rate on strain hardening and deformation mechanisms of high manganese austenitic steels
- Size effects resulting from local strain hardening; microstructural evaluation of Fe-3% Si and Cu deformed in tension and deep drawing using orientation gradient mapping (OGM)
- Microstructure of super-austenitic steels after long-term annealing
- Investigation of tensile–compressive yield asymmetry and the role of deformation twin in extruded pure magnesium
- Neutron diffraction study on liquid Al–Ni alloys
- Investigation of the atomic structure of molten As–Se alloys using X-ray diffraction
- A theoretical approach to the elastic behaviour of compact and hollow spherical particles reinforced metal-matrix composites
- Applied
- Adsorption of nucleotides on the rutile (110) surface
- Effect of cyclic heat treatment on the microstructures and mechanical properties of Ti–Si alloys
- Deleterious phases resulting from the induction bending of thick-walled super-duplex pipework
- Steady state creep in a rotating composite disc of variable thickness
- Influence of data conversion methods from torsion tests on the Garofalo equation parameters for a high nitrogen steel
- High-alloy ferritic cast irons with different graphite microstructures for exhaust manifolds and turbocharger housings
- Microstructure and mechanical properties of friction stir butt welded dissimilar pure copper/brass alloy plates
- The heat capacity measurements of CoSb3-based Skutterudite compounds
- DGM News
- DGM News
