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YANG Wensheng, WU Jianzhong, GUO Hanjie, YU Mengxi, DUAN Shengchao, SHI Xiao. Thermodynamic analysis of precipitation of carbon nitride in DH36 steel[J]. Nonferrous Metals Science and Engineering, 2017, 8(1): 29-34. DOI: 10.13264/j.cnki.ysjskx.2017.01.005
Citation: YANG Wensheng, WU Jianzhong, GUO Hanjie, YU Mengxi, DUAN Shengchao, SHI Xiao. Thermodynamic analysis of precipitation of carbon nitride in DH36 steel[J]. Nonferrous Metals Science and Engineering, 2017, 8(1): 29-34. DOI: 10.13264/j.cnki.ysjskx.2017.01.005
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Thermodynamic analysis of precipitation of carbon nitride in DH36 steel

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  • The two sub-lattice model was applied to determine the precipitation conditions of carbon and nitrogen precipitates in DH36 steel on the basis of the Fe-Nb-Ti-C-N system. The results show that the precipitation temperature of titanium is 1380 ℃, and the precipitation temperature of Nb is 1100 ℃. TiN was the main factor affecting the grain growth of austenite in the 1 100~1 400 ℃. Below 1 100 ℃ NbC and TiC are the important factors to inhibit austenite recrystallization and recrystallization in DH36 steel.
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