High-strength precipitation-hardening austenitic Fe–Mn–V–Mo–C steels with shape memory effect

Austenitic Fe–20% Mn alloys with the shape memory effect (SME) were studied. The alloys contained different carbon concentrations and were doped with V and Mo so as to achieve the maximum strengthening. It was shown that the contribution of the precipitation hardening depended strongly on the carbon...

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Bibliographic Details
Published in:Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2008-05, Vol.481, p.747-751
Main Authors: Sagaradze, V.V., Kositsyna, I.I., Mukhin, M.L., Belozerov, Y.V., Zaynutdinov, Yu.R.
Format: Article
Language:English
Subjects:
Carbide strengthening
High-strength austenitic steel
Shape memory effect
ɛ-Martensite
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Summary:Austenitic Fe–20% Mn alloys with the shape memory effect (SME) were studied. The alloys contained different carbon concentrations and were doped with V and Mo so as to achieve the maximum strengthening. It was shown that the contribution of the precipitation hardening depended strongly on the carbon concentration, the number of carbide-forming elements, and the temperature-and-time parameters of aging. The SME was controlled by stabilization and destabilization of the austenite with respect to the formation of the ɛ-martensite. For this purpose, conditions of formation of V(Mo)C carbides were adjusted.
ISSN:0921-5093
1873-4936
DOI:10.1016/j.msea.2007.02.158