TY - JOUR
T1 - In-situ neutron diffraction study on the deformation of a TRIP-assisted multi-phase steel composed of ferrite, austenite and martensite
AU - Lavakumar, A.
AU - Park, M. H.
AU - Gao, S.
AU - Shibata, A.
AU - Okitsu, Y.
AU - Gong, W.
AU - Harjo, S.
AU - Tsuji, N.
N1 - Publisher Copyright:
© Published under licence by IOP Publishing Ltd.
PY - 2019/12/9
Y1 - 2019/12/9
N2 - Multi-phase steels showing transformation induced plasticity (TRIP), can exhibit an excellent combination of high strength and good ductility by the aid of martensitic transformation during deformation. Even though TRIP-assisted multi-phase steels have been widely used in industry, the role of each phase in the enhancement of mechanical properties is still unclear given their complicated microstructures. In order to understand better the nature of the TRIP effect, the mechanical interaction between different phases at the micro-scale should be clarified. In the present study, the mechanical behavior of a transformation induced plasticity (TRIP) assisted multi-phase steel, has been characterized by in-situ neutron diffraction during tensile testing. The result of strain partitioning between the different phases obtained from the in-situ neutron analysis revealed that the martensite phase took much more elastic strain than the ferrite and retained austenite phases, which suggests that the work hardening behavior in the present steel is affected by the higher load borne by deformation-induced martensite.
AB - Multi-phase steels showing transformation induced plasticity (TRIP), can exhibit an excellent combination of high strength and good ductility by the aid of martensitic transformation during deformation. Even though TRIP-assisted multi-phase steels have been widely used in industry, the role of each phase in the enhancement of mechanical properties is still unclear given their complicated microstructures. In order to understand better the nature of the TRIP effect, the mechanical interaction between different phases at the micro-scale should be clarified. In the present study, the mechanical behavior of a transformation induced plasticity (TRIP) assisted multi-phase steel, has been characterized by in-situ neutron diffraction during tensile testing. The result of strain partitioning between the different phases obtained from the in-situ neutron analysis revealed that the martensite phase took much more elastic strain than the ferrite and retained austenite phases, which suggests that the work hardening behavior in the present steel is affected by the higher load borne by deformation-induced martensite.
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U2 - 10.1088/1757-899X/580/1/012036
DO - 10.1088/1757-899X/580/1/012036
M3 - Conference article
AN - SCOPUS:85078152853
VL - 580
JO - IOP Conference Series: Materials Science and Engineering
JF - IOP Conference Series: Materials Science and Engineering
SN - 1757-8981
IS - 1
M1 - 012036
T2 - 40th Riso International Symposium on Materials Science: Metal Microstructures in 2D, 3D and 4D
Y2 - 2 September 2019 through 6 September 2019
ER -