Thermally Stable Nanocrystalline Steel
Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
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Hulme-Smith, C., Ooi, S., & Bhadeshia, H. (2017). Thermally Stable Nanocrystalline Steel. Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, 48 4957-4964. https://doi.org/10.1007/s11661-017-4248-x
Two novel nanocrystalline steels were designed to withstand elevated temperatures without catastrophic microstructural changes. In the most successful alloy, a large quantity of nickel was added to stabilize austenite and allow a reduction in the carbon content. A 50 kg cast of the novel alloy was produced and used to verify the formation of nanocrystalline bainite. Synchrotron X-ray diffractometry using in situ heating showed that austenite was able to survive more than one hour at 773 K (500 °C) and subsequent cooling to ambient temperature. This is the first reported nanocrystalline steel with high-temperature capability.
UNIVERSITY OF BIRMINGHAM (FB EPSRC) (EP/H022309/1)
External DOI: https://doi.org/10.1007/s11661-017-4248-x
This record's URL: https://www.repository.cam.ac.uk/handle/1810/265736