Optimization of the Product of Strength and Plasticity of Hot-Stamped WHT1300HF High Strength Steel

Abstract:

The quenching and partitioning (Q&P) process was performed on high strength steel WHT1300HF at 250-350 °C for 30 to 90 s, respectively, for the improvement of its product of strength and plasticity (PSP). ε-carbide precipitation was observed in all the specimens partitioned at each temperature for different periods of time due to inadequate amount of Si in the composition of WHT1300HF steel. The volume fraction of retained austenite at room temperature in the partitioned specimens is extremely low due to the lack of carbon enrichment in untransformed austenite at the partitioning temperature as a result of the carbide precipitation. The decrease of tensile strength and increase of elongation are caused by the partitioning treatment, a maximum value of the PSP (17.6 GPa%) is achieved by partitioning at 300 °C for 60 s.

• Periodical: Advanced Materials Research (Volumes 798-799)
• Pages: 280-285
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.798-799.280
• Online since: September 2013
• Authors: Kai Liu, Bo Chi, Zeng Min Shi, Ji Bin Liu, Li Jian
• Keywords: Electron Microscopy (TEM), Heat Treatment, Mechanical Property, Metals

References

[1] Hongzhong Lu, Mingtu Ma, Jianghai You, Zzhigang Li, World Nonferrous Metals. 5 (2008) 66-70.

[2] H. Karbasian and A.E. Tekkaya, J. Mater. Process. Techno. 15 (2010) 2103-2118.

[3] Hong Xu, Yongbo Shen, Zhengwei Gu, Jia Meng, Sibin Yu, Xin Li, Journal of Jilin University (Engineering and Technology Edition). 41 (2011) 111-114.

[4] J.G. Speer, D.K. Matlock, B.C. De Cooman, J.G. Schroth, Acta Mater. 51(2003) 2611-2622.

DOI: 10.1016/s1359-6454(03)00059-4

[5] J.G. Speer, D.V. Edmonds, F.C. Rizzo, D.K. Matlock, Curr. Opin. Solid State Mater. Sci. 8 (2004) 219-237.

[6] M. Merklein and J. Lechler, J. Mater. Process. Techno. 177 (2006) 452-455.

[7] Zengmin Shi, Kai Liu, Maoqiu Wang, Jie Shi, Han Dong, Jian Pu, Bo Chi, Yisheng Zhang, Jian Li, Mater. Sci. Eng. A. 528 (2011) 3681-3688.

[8] Zengmin Shi, Kai Liu, Maoqiu Wang, Jie Shi, Han Dong, Jian Pu, Bo Chi, Yisheng Zhang, Jian Li, Mater. Sci. Eng. A. 535 (2012) 290-296.

[9] Zengmin Shi, Kai Liu, Maoqiu Wang, Jie Shi, Han Dong, Jian Pu, Bo Chi, Yisheng Zhang, Jian Li, Met Mater Int, 18 (2012) 317-320.

DOI: 10.1007/s12540-012-2015-5

[10] Heping Liu, Xxuejun Jin, Han Dong, Jie Shi, Mater. Charact. 62 (2011) 223-227.

[11] Weizhong Xu, Masters Thesis, Microstructural design of ultra-high strength steels with ductility enhancement by quenching and partitioning process, Shanghai Jiao Tong University, Shanghai, (2010) p.35.

[12] Mei Zhang, Study on New High Strength and Super High Strength TRIP Steels, Ph. D Thesis, Shanghai University, Shanghai, (2007) p.5.

[13] M.H. Saleh and R. Priestner, J. Mater. Process. Techno. 113 (2001) 587-593.

[14] P. Jacques, E. Girault, T. Catlin, N. Geerlofs, T. Kop, S. van der Zwaag, F. Delannay, Mater. Sci. Eng. A. 273 (1999) 475-479.

DOI: 10.1016/s0921-5093(99)00331-7

[15] S.J. KIM, C.G. LEE, I. CHOI and S. LEE, Metall Mater Trans A. 32 (2001) 505-514.