Abstract
In this paper, microstructure and texture development in a Fe–24Ni–0.3C metastable austenitic steel processed by accumulative roll bonding (ARB) and subsequent annealing was studied. Microstructural observations and crystallographic analysis were carried out by FE-SEM/EBSD. The results showed that elongated ultrafine-grained austenite having 300 nm in thickness surrounded by high angle boundaries was obtained after 6 cycles of the ARB process. It was found that 1-cycle ARB-processed specimen exhibited Copper ({112} 〈111〉) component as main texture, while by increasing the number of ARB cycles, it deviated to S component ({123} 〈634〉) at 2 cycles or Brass component ({110} 〈112〉) at 6-cycle. Annealing of 6-cycle ARB-processed specimen at 873 K for 1.8 ks resulted in the formation of an austenite with mean grain size of 2.5 µm having strong Cube recrystallization texture ({100} 〈001〉).
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Acknowledgements
This study was done during Hamidreza Jafarian’s stay in Dept. of Materials Science & Engineering Kyoto University, which was supported by the Ministry of Science, Research and Technology (MSRT) of Iran. The support is gratefully appreciated.
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Jafarian, H., Eivani, A. Texture development and microstructure evolution in metastable austenitic steel processed by accumulative roll bonding and subsequent annealing. J Mater Sci 49, 6570–6578 (2014). https://doi.org/10.1007/s10853-014-8254-8
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DOI: https://doi.org/10.1007/s10853-014-8254-8