Journal of Northeastern University Natural Science ›› 2018, Vol. 39 ›› Issue (8): 1118-1122.DOI: 10.12068/j.issn.1005-3026.2018.08.011

• Materials & Metallurgy • Previous Articles     Next Articles

Temperature Field in Annealing Process of Dual-Phase Steel TRB

KE Di-wen1, LIU Xiang-hua1,2, ZHI Ying1   

  1. 1. State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110819, China; 2. Research Academy, Northeastern University, Shenyang 110819, China.
  • Received:2017-04-26 Revised:2017-04-26 Online:2018-08-15 Published:2018-09-12
  • Contact: LIU Xiang-hua
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Abstract: To gain cold rolled dual phase steel TRB (tailor rolled blank) with controllable performance, the annealing temperature variation during annealing is necessary to know. The temperature distribution of dual-phase steel TRB at different thickness in the annealing process was simulated by the finite element software ABAQUS. The results showed that when the different areas in TRB is in same cooling rate, the bigger the cooling rate is, the less gap between the ratio of the convection heat transfer coefficient, which changes from 2.12 to 2.03, and the ratio of thickness is. The convection heat transfer coefficient is directly proportional to cooling rate. When cooling intensity is same in different areas in TRB, the temperature difference between thick and thin area increases from 124℃ to 141℃ with increased cooling rate. If the slope of TRB increases, the length of temperature affected zone increases.

Key words: tailor rolled blank, annealing, temperature-field, finite element, dual-phase steel

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