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- Title
Chemical nano-scale homogeneity of austenitic CrMnCN steels in relation to electronic and magnetic properties.
- Authors
Shanina, B.; Tyshchenko, A.; Glavatskyy, I.; Runov, V.; Petrov, Yu; Berns, H.; Gavriljuk, V.
- Abstract
Measurements of conduction electron spin resonance, temperature-dependent magnetization, small angle neutron scattering, and transmission electron microscopy were used for the analysis of chemical nonhomogeneity in austenitic steels with carbon + nitrogen or carbon only. It is shown that all studied steels are characterized by a nonhomogeneous distribution of alloying elements on the fine scale: from 3 to 5 nm in CrMnCN steels to about 30 nm in MnC Hadfield type steel. In the CN steels, their chemical homogeneity is improved by decreasing the C/N ratio. A ferromagnetic-type temperature behavior is observed in the CN steels at temperatures below 86 K, which is attributed to the blocking of magnetic moments of superparamagnetic clusters. The short-range decomposition of all studied steels results in a different splitting of dislocations, which corresponds to two different values of the stacking fault energy.
- Subjects
MAGNETIC properties of chromium alloys; MANGANESE steel; ELECTRON paramagnetic resonance; NEUTRON scattering; TRANSMISSION electron microscopy; MAGNETIC susceptibility measurement; INGOTS
- Publication
Journal of Materials Science, 2011, Vol 46, Issue 24, p7725
- ISSN
0022-2461
- Publication type
Article
- DOI
10.1007/s10853-011-5752-9