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| Effects of Annealing Time on Microstructure and Mechanical Properties of Continuous Casting Weathering Steel Containing 0.15%P Thin Cold-rolled Strip |
| CHEN Jun1, ZHOU Guoping2, LIU Zhenyu1, QIU Yiqing1, WANG Guodong1 |
1.The state Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110004
2.Tangshan Iron & Steel Co. Ltd, Cold Rolling Plant, Tangshan 063016 |
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Cite this article:
CHEN Jun ZHOU Guoping LIU Zhenyu QIU Yiqing WANG Guodong. Effects of Annealing Time on Microstructure and Mechanical Properties of Continuous Casting Weathering Steel Containing 0.15%P Thin Cold-rolled Strip. Chin J Mater Res, 2011, 25(3): 268-272.
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Abstract The weathering strip containing 0.15%P was prepared by using a pilot twin-roll strip caster. The effect of annealing time on microstructure and mechanical properties of the continuous casting weathering steel after cold rolling was investigated. The results show that after annealing for 40 min the fine ferrite and pearlite structure can be gained and all of yield ratios are less than 0.8 and all of strain hardening exponents are higher than 0.2 during the annealing times which were investigated in the paper. Tensile strength gradually declines and yield strength firstly descends and basically remains invariant subsequently with annealing time increasing. The reason that fine grain structure can be observed in localized area was discussed.
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Received: 06 January 2011
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| Fund: Supported by National Key Basic Research and Development Program of China No.2004CB619108. |
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