In order to predict the microstructures and hardness evolution of tailored hot stamping (THS) component, a thermo-mechanical-metallurgical couple finite element model was established. In particular, the activation energies for ferrite and bainite in the model were optimised. THS experiment of U-shape component with segmented heating and cooling was also performed to compare the hardness distribution and phase change with numerical simulation. The results showed that the original model and the activation energy optimised model can both be used to predict the microstructures and hardness evolution for hot stamping components with full martensite. As for THS component, the effect of cooling path and deformation on the activation energies of phase transformation should be considered.
ChangY, MengZH, YingL, Influence of hot press forming techniques on properties of vehicle high strength steels. J Iron Steel Res Int2011;18(5):59–63. doi: 10.1016/S1006-706X(11)60066-6
2.
GeorgiadisG, TekkayaAE, WeigertP, Investigations on the manufacturability of thin press hardened steel components. Procedia Cirp.2014;18:74–79. doi: 10.1016/j.procir.2014.06.110
3.
KarbasianH, TekkayaAE.A review on hot stamping. J. Mater. Process Tech. 2010;210(15):2103–2118. doi: 10.1016/j.jmatprotec.2010.07.019
4.
LiMF, ChiangTS, TsengJH, Hot stamping of door impact beam. Procedia Eng. 2014;81:1786–1791. doi: 10.1016/j.proeng.2014.10.233
5.
LiuHS, XingZW, LeiCX.Hot formation quality of high strength steel BR1500HS for hot stamping without cooling system. T. Nonferr. Metal Soc. 2012;22:542–547. doi: 10.1016/S1003-6326(12)61758-0
6.
YingL, LuJD, ChangY, Optimization evaluation test of strength and toughness parameters for hot-stamped high strength steels. J. Iron Steel Res. Int. 2013;20(11):51–56. doi: 10.1016/S1006-706X(13)60196-X
7.
MerkleinM, WielandM, LechnerM, Hot stamping of boron steel sheets with tailored properties: a review. J. Mater. Process Tech. 2016;228:11–24. doi: 10.1016/j.jmatprotec.2015.09.023
8.
ZhouMB, TangJL, YangJ, Tailored properties of a novelly-designed press-hardened 22MnMoB steel. J Iron Steel Res Int2017;24:508–512. doi: 10.1016/S1006-706X(17)30077-8
9.
YingL, ZhaoX, DaiM, Crashworthiness design of quenched boron steel thin-walled structures with functionally graded strength. Int. J. Impact Eng. 2016;95:72–88. doi: 10.1016/j.ijimpeng.2016.05.001
10.
AbdollahpoorA, ChenX, PereiraMP, Sensitivity of the final properties of tailored hot stamping components to the process and material parameters. J. Mater. Process Tech. 2016;228:125–136. doi: 10.1016/j.jmatprotec.2014.11.033
11.
OmerK, KimS, CliffB, Characterizing the constitutive properties of AA7075 for hot forming. Int. J. Impact. Eng. 2017;896:1–8.
12.
WangZ, LiuP, XuY, Hot stamping of high strength steel with tailored properties by two methods. Procedia Eng. 2014;81:1725–1730. doi: 10.1016/j.proeng.2014.10.221
13.
XingZW, CuiJJ, LiuHS, Numerical and experimental investigation into hot stamping of high strength steel sheet for auto b pillar reinforced panel. Adv Mater Res. 2010;129–131:322–327.
14.
BokH-H, LeeMG, PavlinaEJ, Comparative study of the prediction of microstructure and mechanical properties for a hot-stamped B-pillar reinforcing part. Int. J. Mech. Sci. 2011;53(9):744–752. doi: 10.1016/j.ijmecsci.2011.06.006
15.
TekkayaA, KarbasianH, HombergW, Thermo-mechanical coupled simulation of hot stamping components for process design. Prod. Eng. Res. Devel. 2007;1:85–89. doi: 10.1007/s11740-007-0025-9
16.
XingZW, BaoJ, YangYY.Numerical simulation of hot stamping of quenchable boron steel. Mat. Sci. Eng. A. 2009;499(1–2):28–31. doi: 10.1016/j.msea.2007.09.102
17.
ForcelleseA, ManciniE, SassoM, Frictional behaviour of AA7075-O aluminium alloy in high speed tests. Int. J. Adv. Manuf. Tech. 2017;89(1):1–12. doi: 10.1007/s00170-016-9049-7
18.
ÅkerströmP.Modelling and simulation of hot stamping [dissertation]. Luleå: University of Technology; 2006.
19.
LiMV, NiebuhrDV, MeekishoLL, A computational model for the prediction of steel hardenability. Metall. Mater. Trans B. 1998;29(3):661–672. doi: 10.1007/s11663-998-0101-3
20.
BarcellonaA, PalmeriD.Effect of plastic hot deformation on the hardness and continuous cooling transformations of 22MnB5 microalloyed boron steel. Metall Mater Trans A. 2009;40(5):1160–1174. doi: 10.1007/s11661-009-9790-8
21.
BardelcikA, WorswickMJ, WellsMA.The influence of martensite, bainite and ferrite on the as-quenched constitutive response of simultaneously quenched and deformed boron steel-experiments and model. Mater. Design. 2014;55:509–525. doi: 10.1016/j.matdes.2013.10.014
22.
MerkleinM, LechlerJ.Determination of material and process characteristics for hot stamping processes of quenchenable ultra high strength steels with respect to a FE-based process design. SAE Int. J. Mater. Manuf. 2009;1(1):411–426. doi: 10.4271/2008-01-0853
23.
ZhangZ, GaoP, LiuC, Experimental and simulation study for heat transfer coefficient in hot stamping of high-strength boron steel. Metall Mater Trans B. 2015;46(6):2419–2422. doi: 10.1007/s11663-015-0452-5
24.
OmerK.Development and testing of a hot stamped axial crush member with tailored properties[dissertation]. University of Waterloo; 2015.
