TY - JOUR
T1 - Nanocrystalline structures and tensile properties of stainless steels processed by severe plastic deformation
AU - Belyakov, A.
AU - Odnobokova, M.
AU - Kipelova, A.
AU - Tsuzaki, K.
AU - Kaibyshev, R.
PY - 2014
Y1 - 2014
N2 - The development of nanocrystalline structures in austenitic stainless steels during large strain cold rolling and their tensile behavior were studied. The cold rolling to total equivalent strains above 2 was accompanied by the evolution of nanocrystalline structures with the transverse grain size of about 100 nm. The development of deformation twinning and martensitic transformation during cold working promoted the fast kinetics of structural changes. The development of nanocrystalline structures resulted in significant strengthening. More than fourfold increase in the yield strength was achieved. The strengthening of nanocrystalline steels after severe plastic deformation was considered as a concurrent operation of two strengthening mechanisms, which were attributed to grain size and internal stress. The contribution of internal stresses to the yield strength is comparable with that from grain size strengthening.
AB - The development of nanocrystalline structures in austenitic stainless steels during large strain cold rolling and their tensile behavior were studied. The cold rolling to total equivalent strains above 2 was accompanied by the evolution of nanocrystalline structures with the transverse grain size of about 100 nm. The development of deformation twinning and martensitic transformation during cold working promoted the fast kinetics of structural changes. The development of nanocrystalline structures resulted in significant strengthening. More than fourfold increase in the yield strength was achieved. The strengthening of nanocrystalline steels after severe plastic deformation was considered as a concurrent operation of two strengthening mechanisms, which were attributed to grain size and internal stress. The contribution of internal stresses to the yield strength is comparable with that from grain size strengthening.
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U2 - 10.1088/1757-899X/63/1/012156
DO - 10.1088/1757-899X/63/1/012156
M3 - Conference article
AN - SCOPUS:84906336126
SN - 1757-8981
VL - 63
JO - IOP Conference Series: Materials Science and Engineering
JF - IOP Conference Series: Materials Science and Engineering
IS - 1
M1 - 012156
T2 - 6th International Conference on Nanomaterials by Severe Plastic Deformation, NanoSPD 2014
Y2 - 30 June 2014 through 4 July 2014
ER -