Li Xia, Wang Xigang. Production Practice of Process Optimization of 780 MPa Cold Rolled Dual Phase Steel[J]. IRON STEEL VANADIUM TITANIUM, 2018, 39(1): 160-164. doi: 10.7513/j.issn.1004-7638.2018.01.028
Citation:
Li Xia, Wang Xigang. Production Practice of Process Optimization of 780 MPa Cold Rolled Dual Phase Steel[J]. IRON STEEL VANADIUM TITANIUM, 2018, 39(1): 160-164. doi: 10.7513/j.issn.1004-7638.2018.01.028
Li Xia, Wang Xigang. Production Practice of Process Optimization of 780 MPa Cold Rolled Dual Phase Steel[J]. IRON STEEL VANADIUM TITANIUM, 2018, 39(1): 160-164. doi: 10.7513/j.issn.1004-7638.2018.01.028
Citation:
Li Xia, Wang Xigang. Production Practice of Process Optimization of 780 MPa Cold Rolled Dual Phase Steel[J]. IRON STEEL VANADIUM TITANIUM, 2018, 39(1): 160-164. doi: 10.7513/j.issn.1004-7638.2018.01.028
Product Research Institute of Benxi Iron & Steel(Group) Co., Ltd. Product Research Institute of Benxi Iron & Steel(Group) Co., Ltd., Benxi 117000, Liaoning, China
In order to obtain excellent mechanical property of 780 MPa cold rolled dual phase steel,process optimization had been done including adjusting the chemical elements C、Si、Nb、Ti、Cr and coiling temperature.And the microstructure observation and mechanical properties measurement of hot and cold rolling strip had been performed.It is found out that alloying design of 0.12%C+0.39%Si+0.25% ~0.60% Nb+Cr and suitable coiling temperature below 660 ℃ can generate desired microstructure and mechanical properties.And optimal ratio of yield to tensile strength and the product of tensile strength and elongation of 18 318 MPa·% had been achieved.
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