Xiao-pei Wang, Ai-min Zhao, Zheng-zhi Zhao, Yao Huang, Liang Li, and Qing He, Mechanical properties and characteristics of nanometer-sized precipitates in hot-rolled low-carbon ferritic steel, Int. J. Miner. Metall. Mater., 21(2014), No. 3, pp. 266-272. https://doi.org/10.1007/s12613-014-0904-y
Cite this article as:
Xiao-pei Wang, Ai-min Zhao, Zheng-zhi Zhao, Yao Huang, Liang Li, and Qing He, Mechanical properties and characteristics of nanometer-sized precipitates in hot-rolled low-carbon ferritic steel, Int. J. Miner. Metall. Mater., 21(2014), No. 3, pp. 266-272. https://doi.org/10.1007/s12613-014-0904-y
Xiao-pei Wang, Ai-min Zhao, Zheng-zhi Zhao, Yao Huang, Liang Li, and Qing He, Mechanical properties and characteristics of nanometer-sized precipitates in hot-rolled low-carbon ferritic steel, Int. J. Miner. Metall. Mater., 21(2014), No. 3, pp. 266-272. https://doi.org/10.1007/s12613-014-0904-y
Citation:
Xiao-pei Wang, Ai-min Zhao, Zheng-zhi Zhao, Yao Huang, Liang Li, and Qing He, Mechanical properties and characteristics of nanometer-sized precipitates in hot-rolled low-carbon ferritic steel, Int. J. Miner. Metall. Mater., 21(2014), No. 3, pp. 266-272. https://doi.org/10.1007/s12613-014-0904-y
The microstructures and properties of hot-rolled low-carbon ferritic steel have been investigated by optical microscopy, field-emission scanning electron microscopy, transmission electron microscopy, and tensile tests after isothermal transformation from 600℃ to 700℃ for 60 min. It is found that the strength of the steel decreases with the increment of isothermal temperature, whereas the hole expansion ratio and the fraction of high-angle grain boundaries increase. A large amount of nanometer-sized carbides were homogeneously distributed throughout the material, and fine (Ti, Mo)C precipitates have a significant precipitation strengthening effect on the ferrite phase because of their high density. The nanometer-sized carbides have a lattice parameter of 0.411–0.431 nm. After isothermal transformation at 650℃ for 60 min, the ferrite phase can be strengthened above 300 MPa by precipitation strengthening according to the Ashby-Orowan mechanism.
The microstructures and properties of hot-rolled low-carbon ferritic steel have been investigated by optical microscopy, field-emission scanning electron microscopy, transmission electron microscopy, and tensile tests after isothermal transformation from 600℃ to 700℃ for 60 min. It is found that the strength of the steel decreases with the increment of isothermal temperature, whereas the hole expansion ratio and the fraction of high-angle grain boundaries increase. A large amount of nanometer-sized carbides were homogeneously distributed throughout the material, and fine (Ti, Mo)C precipitates have a significant precipitation strengthening effect on the ferrite phase because of their high density. The nanometer-sized carbides have a lattice parameter of 0.411–0.431 nm. After isothermal transformation at 650℃ for 60 min, the ferrite phase can be strengthened above 300 MPa by precipitation strengthening according to the Ashby-Orowan mechanism.
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