Abstract：The morphology and composition of 22MnB5 with zinc based coatings of different pre-alloying time were analysed by means of scanning electron microscopy（SEM），energy dispersive spectroscopy （EDS）. The results show that， there are ZnO and Al2O3 on the surface of the coatings after heating. Under the pre-alloying temperature of 550 ℃，with the time prolonging，iron atoms in the substrate gradually diffuses into the coatings，and the composition of coatings changes from η phase，ζ phase，δ phase and Γ phase to only Γ phase. There is almost α-Fe（Zn） in the coatings and only little Γ phase on the surface after austenitizing. High quality can be achieved under the pre-alloying process of heating for 30 min and austenitizing at 900 ℃ for 5 min.
于武刚，邱肖盼，张 杰，江社明，杨慧宇，张启富. 预合金化时间对热成形钢锌基镀层组织和成分的影响[J]. 钢铁, 2017, 52(7): 84-88.
YU Wu-gang，QIU Xiao-pan，ZHANG Jie，JIANG She-ming，YANG Hui-yu，ZHANG Qi-fu. Influence of pre-alloying time on zinc-based coatings of hot forming steel in structure and component. Iron and Steel, 2017, 52(7): 84-88.
Hu P, Ying L, Li Y, et al.Effect of Oxide Scale on Temperature Dependent Interfacial Heat Transfer in Hot Stamping Process[J].Journal of Materials Processing Technology, 2013, 213(9):1475-1483
[1]
Karbasian H, Tekkaya A E.A review on hot stamping[J].Journal of Materials Processing Technology, 2010, 210(15):2103-2118
Fan D W, Bruno C.State-of-the-knowledge on coating systems for hot stamped partsSteel Research[J]., 2012, 83(5):412-433
[3]
Hu P, Ying L, Li Y, et al.Effect of Oxide Scale on Temperature Dependent Interfacial Heat Transfer in Hot Stamping Process[J].Journal of Materials Processing Technology, 2013, 213(9):1475-1483
[5]
Wang K, Gui Z X, Liu P X, et al.Cracking behavior of Al-Si coating on hot stamping boron steel sheet[J]. Procedia Engineering, 2014, 81:1713-1718.
[4]
Fan D W, Bruno C.State-of-the-knowledge on coating systems for hot stamped partsSteel Research[J]., 2012, 83(5):412-433
[6]
Ghiotti A, Bruschi S, Meddea F.Comparison of tribological and wear performances of AlSi and Zn coatings in hot stamping of boron steel sheets[J]. Wear, 2015, 332-333:810-821.
[5]
Wang K, Gui Z X, Liu P X, et al.Cracking behavior of Al-Si coating on hot stamping boron steel sheet[J]. Procedia Engineering, 2014, 81:1713-1718.
Lee C W, Choi W S, Cho L, et al.Liqid-Metal-Induced Embrittlement of Zn-coated Hot Stamping Steel[J]. Metallurgical and materials transactions.2012, 43(13): 5122-5127.
[6]
Ghiotti A, Bruschi S, Meddea F.Comparison of tribological and wear performances of AlSi and Zn coatings in hot stamping of boron steel sheets[J]. Wear, 2015, 332-333:810-821.
Marder A R.The metallurgy of zinc-coated steel[J].Progress in Materials Science, 2000, 45(3):191-271
[8]
Lee C W, Choi W S, Cho L, et al.Liqid-Metal-Induced Embrittlement of Zn-coated Hot Stamping Steel[J]. Metallurgical and materials transactions.2012, 43(13): 5122-5127.
[10]
Zhu L J, Gu Z W, Xu H, et al.Modeling of Microstructure Evolution in 22MnB5 Steel during Hot Stamping[J].Journal of Iron and Steel Research, 2014, 21(2):197-201
[9]
Marder A R.The metallurgy of zinc-coated steel[J].Progress in Materials Science, 2000, 45(3):191-271
[10]
Zhu L J, Gu Z W, Xu H, et al.Modeling of Microstructure Evolution in 22MnB5 Steel during Hot Stamping[J].Journal of Iron and Steel Research, 2014, 21(2):197-201
2017, Vol. 52 
