The well-known Olson–Cohen model is modified by incorporating the effect of stress state on the transformation kinetics in metastable austenitic stainless steels. By assuming isothermal condition, the relationships between the parameters of Olson–Cohen model, stress triaxiality and absolute value of Lode angle parameter have been established. The proposed model predicts that the saturation level and slope of transformation curve increase with increasing the stress triaxiality in addition to the absolute value of Lode angle parameter. Uniaxial and plane strain tension tests have been conducted on the two types of austenitic stainless steels AISI 304 and AISI 201 to evaluate the validity of the model. The results show that the predicted transformation curves are in good agreement with the experimental data.
OlsonGB, CohenM.Kinetics of strain-induced martensitic nucleation. Metall Trans A. 1975;6:791–795. doi: 10.1007/BF02672301
2.
IwamotoT, TsutaT.Computational simulation of the dependence of the austenitic grain size on the deformation behavior of TRIP steels. Int J Plast. 2000;16:791–804. doi: 10.1016/S0749-6419(99)00079-0
3.
IwamotoT, TsutaT, TomitaY.Investigation on deformation mode dependence of strain-induced martensitic transformation in TRIP steels and modeling of transformation kinetics. Int J Mech Sci. 1998;40:173–182. doi: 10.1016/S0020-7403(97)00047-7
4.
TomitaY, IwamotoT.Constitutive modeling of TRIP steel and its application to the improvement of mechanical properties. Int J Mech Sci. 1995;37:1295–1305. doi: 10.1016/0020-7403(95)00039-Z
5.
TalonenJ, NenonenP, PapeG, Effect of strain rate on the strain-induced – martensite transformation and mechanical properties of austenitic stainless steels. Metall Mater Trans A. 2005;36:421–432. doi: 10.1007/s11661-005-0313-y
6.
TalonenJ, HanninenH.Formation of shear bands and strain-induced martensite during plastic deformation of metastable austenitic stainless steels. Acta Mater. 2007;55:6108–6118. doi: 10.1016/j.actamat.2007.07.015
7.
DianiJM, ParksDM.Effects of strain state on the kinetics of strain induced martensite in steels. J Mech Phys Solids. 1998;46:1613–1635. doi: 10.1016/S0022-5096(98)00001-5
8.
HanG, YuanH.Deformations and damage evolution of austenitic steel AISI304 with martensite phase transformation. Proc. 13th Int. Conf. on Fracture; 2013 Jun; Beijing, China. University of Beijing; Paper 19. p. 118–128.
9.
ShinHC, HaTK, ChangYW.Kinetics of deformation induced martensitic transformation in a 304 stainless steel. Scr Mater. 2001;45:823–829. doi: 10.1016/S1359-6462(01)01101-0
10.
BeeseAM, MohrD.Effect of stress triaxiality and Lode angle on the kinetics of strain-induced austenite-to-martensite transformation. Acta Mater. 2011;59:2589–2600. doi: 10.1016/j.actamat.2010.12.040
11.
AngelT.Formation of martensite in austenitic stainless steels, effects of deformation, temperature and composition. J Iron Steel Inst. 1954;177:165–175.
12.
StringfellowRG, ParkDM, OlsonGB.A constitutive model for transformation plasticity accompanying strain-induced martensitic transformations in metastable austenitic steels. Acta Metall Mater. 1992;40:1703–1716. doi: 10.1016/0956-7151(92)90114-T
13.
DeManiaD.The influence of martensitic transformation on the formability of 304L stainless steel sheet [MS thesis]. Cambridge: MIT; 1995. p. 129–131.
14.
KosarchukVV, ZaitsevaLV, LebedevAA, Effect of stressed state parameters on phase transformation kinetics in austenitic steels with plastic deformation. Strength Mater. 1989;21:60–64. doi: 10.1007/BF01529102
15.
LebedevAA, KosarchukVV.Influence of phase transformations on the mechanical properties of austenitic stainless steels. Int J Plasticity. 2000;16:749–767. doi: 10.1016/S0749-6419(99)00085-6
16.
SantacreuPO, GlezJC, ChinouilhG, Behaviour model of austenitic stainless steels for automotive structural parts. Steel Res Int. 2006;77:686–691. doi: 10.1002/srin.200606448
17.
NangaS, PineauA, TanguyB, Plasticity and strain induced martensitic transformation in two austenitic stainless steels. Proc. of Int. Conf. on Mart. Trans. (ICOMAT); 2008 Jun–Jul; Santa Fe, USA. TMS. p. 341–348.
18.
MillerMP, McDowellDL.The effect of stress-state on the large strain inelastic deformation behavior of 304L stainless steel. J Eng Mater Technol. 1996;118:28–36. doi: 10.1115/1.2805930
19.
BanabicD.Sheet metal forming processes-constitutive modelling and numerical simulation. New York: Springer; 2010. p. 156–157.
20.
CamposHB, ButucMC, GracioJJ, Theorical and experimental determination of the forming limit diagram for the AISI 304 stainless steel. J Mater Process Technol. 2006;179:56–60. doi: 10.1016/j.jmatprotec.2006.03.065
21.
YoungCC.Transformation toughening of phosphocarbide-strengthened austenitic steels [PhD thesis]. Cambridge: MIT; 1998. p. 105–118.
22.
HeckerSS, StoutMG, StaudhammerKP, Effects of strain state and strain rate on deformation-induced transformation in 304 stainless steel, part I. magnetic measurements and mechanical behavior. Metall Trans A. 1982;13:619–626. doi: 10.1007/BF02644427
– martensite transformation and mechanical properties of austenitic stainless steels