Li Shaoying, Han Yihua, Zhu Liguang, Li Kun, Gao Aimin. Effects of Ti,V and Nb on Microstructure of Welding Heat-affected Zone for DH36 Steel[J]. IRON STEEL VANADIUM TITANIUM, 2016, 37(5): 54-59. doi: 10.7513/j.issn.1004-7638.2016.05.010
Citation:
Li Shaoying, Han Yihua, Zhu Liguang, Li Kun, Gao Aimin. Effects of Ti,V and Nb on Microstructure of Welding Heat-affected Zone for DH36 Steel[J]. IRON STEEL VANADIUM TITANIUM, 2016, 37(5): 54-59. doi: 10.7513/j.issn.1004-7638.2016.05.010
Li Shaoying, Han Yihua, Zhu Liguang, Li Kun, Gao Aimin. Effects of Ti,V and Nb on Microstructure of Welding Heat-affected Zone for DH36 Steel[J]. IRON STEEL VANADIUM TITANIUM, 2016, 37(5): 54-59. doi: 10.7513/j.issn.1004-7638.2016.05.010
Citation:
Li Shaoying, Han Yihua, Zhu Liguang, Li Kun, Gao Aimin. Effects of Ti,V and Nb on Microstructure of Welding Heat-affected Zone for DH36 Steel[J]. IRON STEEL VANADIUM TITANIUM, 2016, 37(5): 54-59. doi: 10.7513/j.issn.1004-7638.2016.05.010
1. College of Metallurgy & Energy, North China University of Science and Technology, Hebei Province Research Center of High Quality Steel Continuous Casting Engineering and Technology, Tangshan 063009, Hebei, China;
2. Tangshan Iron and Steel Company, Tangshan 063016, Hebei, China
Vacuum smelting and rolling of DH36 high strength ship plate steel were carried out in laboratory by adding different micro-alloying elements.The effects of micro-alloying elements Ti,V and Nb on the microstructure of welding heat-affected zone for DH36 were investigated by welding thermal simulation tests respectively with 50 and 100 kJ/cm of line energy,using Gleeble 3500 testing machine.The results show that in the welding heat-affected zone of DH36,Ti transforms into oxides inducing acicular ferrite which pins the austenite grain boundaries,while V and Nb do not generate inclusions.
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