1. Chemical nano-scale homogeneity of austenitic CrMnCN steels in relation to electronic and magnetic properties.
- Author
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Shanina, B., Tyshchenko, A., Glavatskyy, I., Runov, V., Petrov, Yu, Berns, H., and Gavriljuk, V.
- Subjects
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MANGANESE steel , *ELECTRON paramagnetic resonance , *NEUTRON scattering , *TRANSMISSION electron microscopy , *MAGNETIC susceptibility measurement , *INGOTS ,MAGNETIC properties of chromium alloys - 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. [ABSTRACT FROM AUTHOR]
- Published
- 2011
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