Thermally Stable Nanocrystalline Steel
Accepted version
Peer-reviewed
Repository URI
Repository DOI
Change log
Authors
Hulme-Smith, CN
Ooi, SW
Bhadeshia, HKDH
Abstract
jats:titleAbstract</jats:title> jats:pTwo 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 jats:italicin situ</jats:italic> heating showed that austenite was able to survive more than 1 hour at 773 K (500 °C) and subsequent cooling to ambient temperature. This is the first reported nanocrystalline steel with high-temperature capability.</jats:p>
Description
Keywords
bainitic steel, nanocrystalline alloys, thermal stability, thermodynamic modelling, synchrotron radiation
Journal Title
Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Conference Name
Journal ISSN
1073-5623
1543-1940
1543-1940
Volume Title
48
Publisher
Springer Science and Business Media LLC
Publisher DOI
Sponsorship
Engineering and Physical Sciences Research Council (EP/H022309/1)
EPSRC (1306243)
Engineering and Physical Sciences Research Council (EP/M005607/1)
EPSRC (1306243)
Engineering and Physical Sciences Research Council (EP/M005607/1)