This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Role of Thermo-Mechanical Treatment on Creep Deformation Behaviour of Reduced Activation Ferritic Martensitic Steel
Technical Paper
2022-28-0064
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
To enhance the microstructural and mechanical properties of Reduced Activation and Ferritic-Martensitic (RAFM) steel thermo mechanical treatment (TMT) was performed on as received Normalised and Tempered steel (N+T). The RAFM with 9Cr-1W-0.06Ta major alloying elements steel was used in the study in N+T and TMT conditions. The refinement in microstructure and precipitates was observed in TMT steel in comparison to N+T steel. There is a drastic improvement in mechanical properties such as hardness, tensile properties are observed without losing the ductility. The creep deformation behaviour of thermo-mechanical treated steel and N+T steel were studied at different stress levels at 823 K. The comparative creep rupture and strain properties were studied, and various creep deformation regimes were also analysed for both the conditions of steel. The rate of exhaustion of primary creep (r), minimum creep rate and time spent in primary and tertiary creep regime, rate of acceleration of tertiary creep and time to reach the onset of tertiary creep. Microstructural studies on Optical and Scanning electron microscopy and transmission electron microscopy results were correlated with the mechanical properties of steels. On a whole, a comparative investigation was performed on various reasons for drastic improvement in tensile and creep rupture properties of TMT steel than the steel in N+T steel and necessary microstructural investigation support is considered.
Authors
Citation
Putta, P., Seerangan, R., and GVS, N., "Role of Thermo-Mechanical Treatment on Creep Deformation Behaviour of Reduced Activation Ferritic Martensitic Steel," SAE Technical Paper 2022-28-0064, 2022, https://doi.org/10.4271/2022-28-0064.Also In
References
- Ravikirana , R.M. , Raju , S. , Saroja , S. , Jayakumar , T. et al. Mater. Charact 84 2013 196 204 10.1016/j.matchar.2013.08.003
- Mythili , R. , Vanaja , J. , Laha , K. , Saroja , S. et al. Procedia Eng. 55 2013 295 299 10.1016/j.proeng.2013.03.257
- Abe , F. , Taneike , M. , and Sawada , K. Int. J. Press. Vessels Pip. 84 1-2 2007 3 12 10.1016/j.ijpvp.2006.09.003
- Tan , L. , Yang , Y. , and Busby , J.T.J. Nucl. Mater 442 1-3 SUPPL.1 2013 S13 S17 10.1016/j.jnucmat.2012.10.015
- Tan , L. , Busby , J.T. , Maziasz , P.J. , and Yamamoto , Y. J. Nucl. Mater. 441 1-3 2013 713 717 10.1016/j.jnucmat.2013.01.323
- Prakash , P. , Vanaja , J. , Srinivasan , N. , Parameswaran , P. et al. Mater. Sci. Eng. A 724 2018 171 180
- Prakash , P. , Vanaja , J. , Prasad Reddy , G.V. , Laha , K. et al. J. Nucl. Mater 520 2019 65 77 101016/jjnucmat201904014
- Hollner , S. , Fournier , B. , Le Pendu , J. , Cozzika , T. , Tournié , I. , Brachet , J. , and Pineau , A. J. Nucl. Mater. 405 2 2010 101 108 10.1016/j.jnucmat.2010.07.034
- Choudhary , B.K. and Isaac Samuel , E. Creep Behaviour of Modified 9Cr-1Mo Ferritic Steel J. Nucl. Mater. 412 2011 82 89
- Hollomon , J.H. Tensile Deformation Trans. Met. Soc. AIME. 162 1945 268 290