The hot deformation behaviour and processing maps of a typical Fe-Mn-Si-Cr steel for automotive body structures were investigated on a Gleeble3500 simulation tester by isothermal compression test in the temperature ranging of 950°C to 1150°C and a strain rate of 0.05–10 s−1. The results show that dynamic recrystallisation softening mechanism is more evident at low strain rate, while dynamic recovery is more evident at high strain rate. The instability parameter ξ() values are negative and considered as unsafe deformation zones at low deformation temperature and high strain rates. The processing maps exhibit two safe domains for hot working: (a) 0.05–1 s−1 and 1080–1150°C, the power dissipation values of η increase with the increase of strain rate. (b) 0.05–1 s−1 and 950–1020°C, while strain is lower than 0.1, the values of η decrease with the increase of strain rate.
Get full access to this article
View all access options for this article.
References
1.
SirinakornTWongwisesSUthaisangsukV.A study of local deformation and damage of dual phase steel. Mater Des. 2014;64:729–742. doi: 10.1016/j.matdes.2014.08.009
2.
SaeidiNAshrafizadehFNiroumandB.Development of a new ultrafine grained dual phase steel and examination of the effect of grain size on tensile deformation behavior. Mater Sci Eng, A. 2014;599:145–149. doi: 10.1016/j.msea.2014.01.053
3.
HosseiniHTAnbarlooieBKadkhodapourJ.Micromechanics stress-strain behavior prediction of dual phase steel considering plasticity and grain boundaries debonding. Mater Des. 2015;68:167–176. doi: 10.1016/j.matdes.2014.12.013
4.
MarviMMMazinaniMRezaeeAB.FEM modeling of the flow curves and failure modes of dual phase steels with different martensite volume fractions using actual microstructure as the representative volume. Comput Mater Sci. 2012;65:197–202. doi: 10.1016/j.commatsci.2012.07.032
5.
JahaziMEgbaliB.The influence of hot rolling parameters on the microstructure and mechanical properties of an ultra-high strength steel. J Mater Process Tech. 2000;103:276–279. doi: 10.1016/S0924-0136(00)00474-X
6.
WangMMZhangFCYangZN.Effects of high-temperature deformation and cooling process on the microstructure and mechanical properties of an ultrahigh-strength pearlite steel. Mater Des. 2017;114:102–110. doi: 10.1016/j.matdes.2016.10.049
7.
NwachukwuPUOluwoleOO.Effects of rolling process parameters on the mechanical properties of hot-rolled St60Mn steel. Case Stud Constr Mater. 2017;6:134–146. doi: 10.1016/j.cscm.2017.01.006
8.
SaadatkiaSMirzadehHCabreraJM.Hot deformation behavior, dynamic recrystallization, and physically-based constitutive modeling of plain carbon steels. Mater Sci Eng A. 2015;636:196–202. doi: 10.1016/j.msea.2015.03.104
9.
WeiHLLiuGQXiaoXet al.Characterization of hot deformation behavior of a new microalloyed C–Mn–Al high-strength steel. Mater Sci Eng A. 2013;564:140–146. doi: 10.1016/j.msea.2012.11.099
10.
DongDYLiuCWangLet al.Effect of strain rate on dynamic deformation behavior for DP780 steel. Acta Metall Sin. 2013;49:159–166. doi: 10.3724/SP.J.1037.2012.00515
11.
WeiHLLiuGQZhaoHTet al.Hot deformation behavior of two C–Mn–Si based and C–Mn–Al based microalloyed high-strength steels: a comparative study. Mater Des. 2013;50:484–490. doi: 10.1016/j.matdes.2013.03.043
12.
FangYYChenXZMadiganBet al.Effects of strain rate on the hot deformation behavior and dynamic recrystallization in China low activation martensitic steel. Fusion Eng Des. 2016;103:21–30. doi: 10.1016/j.fusengdes.2015.11.036
13.
MejíaIAltamiranoGBedolla-JacuindeAet al.Modeling of the hot flow behavior of advanced ultra-high strength steels (A-UHSS) microalloyed with boron. Mater Sci Eng A. 2014;610:116–125. doi: 10.1016/j.msea.2014.04.105
14.
ChenXZHuangYM.Hot deformation behavior of HSLA steel Q690 and phase transformation during compression. J Alloys Compd. 2015;619:564–571. doi: 10.1016/j.jallcom.2014.09.074
15.
PrasadYSeshacharyuluT.Modelling of hot deformation for microstructural control. Int Mater Rev. 1998;43:243–258. doi: 10.1179/imr.1998.43.6.243
16.
PrasadYVRK.Processing maps: a status report. J Mater Eng Perform. 2003;12:638–645. doi: 10.1361/105994903322692420
17.
PrasadYVRKGegelHLDoraiveluSMet al.Modeling of dynamic material behavior in hot deformation: forging of Ti-6242. Metall Trans A. 1984;15:1883–1892. doi: 10.1007/BF02664902
18.
WenDXLinYCLiHBet al.Hot deformation behavior and processing map of a typical Ni-based superalloy. Mater Sci Eng A. 2014;591:183–192. doi: 10.1016/j.msea.2013.09.049
19.
RajR.Development of a processing map for use in warm-forming and hot-forming processes. Metall Trans A. 1981;12:1089–1097. doi: 10.1007/BF02643490
20.
CaoYDiHSZhangJCet al.Research on dynamic recrystallization behavior of Incoloy 800H. Acta Matall Sin. 2012;48:1175–1185. doi: 10.3724/SP.J.1037.2012.00236
