2014, Volume 16, Issue 2
Strategic Study of CAE >> 2014, Volume 16, Issue 2
Development status of hot rolled dual-phase steel and development of high strength hot rolled dual-phase steel
The State Key Laboratory of Rolling and Automation，Northeastern University，Shenyang 110819，China
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Abstract
This paper introduces the development status and existing problems of hot rolled dual-phase steel，and points out that the development and application of low-cost hot rolled dual-phase steel，F-B hot rolled dual- phase steel and high strength hot rolled dual- phase steel would promote the development of hot rolled dual phase steel and the process of replacement of cold rolled products by hot rolled ones in automobile industry. Strengthening mechanism and process control principle of hot rolled dual-phase steel strengthened by ferrite matrix with fine precipitates are also discussed. And the hot rolling experiments were carried out at laboratory.The hot rolled dual-phase steel strengthened by ferrite matrix with fine precipitates has been developed. This steel contains martensite islands and ferrite matrix distributing a large number of supersaturated precipitates and interphase precipitation of finer nano-sized TiC，whose tensile strength reaches up to 770~830 MPa with the yield ratio of less than 0.75.
Keywords
hot rolled dual- phase steel ; low- cost ; F- B dual- phase steel ; precipitation strengthening ; TiC ; high strength steel
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References
[ 1 ] 马鸣图. 先进汽车用钢[M]. 北京：化学工业出版社，2008.
[ 2 ] 付俊岩. 汽车用铌微合金化钢板[M]. 北京：冶金工业出版， 2006.
[ 3 ] 唐 荻，米振莉，陈雨来. 国外新型汽车用钢的技术要求及研 究开发现状[J]. 钢铁，2005，40（6）：1-5. link1
[ 4 ] De Cosmo M，Galantucci L M，Tricarico L. Design of process parameters for dual phase steel production with strip rolling using the finite-element method [J]. Journal of Materials Processing Technology，1999，92/93：486-493. link1
[ 5 ] 张红梅，许云波，刘振宇，等. 变形工艺对热轧双相钢显微组织 和性能的影响[J]. 东北大学学报：自然科学版，2007，28（4）： 505-509. link1
[ 6 ] 马鸣图，吴宝榕. 双相钢——物理和力学冶金[M]. 北京：冶金工 业出版，2009.
[ 7 ] 利成宁，袁 国，周晓光，等.分段冷却模式下热轧双相钢的组 织演变及力学性能[J]. 东北大学学报：自然科学版，2013，34 （6）：180-814. link1
[ 8 ] Christian Bilgen，Liu Xiaoyi. CSP线的双相钢生产工艺[J]. 世界 钢铁，2004（4）：11-14.
[ 9 ] 杨海根，王 军. DP600 级热轧双相钢的开发[J]. 冶金丛刊， 2008（6）：10-16. link1
[10] 唐文军，郑 磊，王自强. 宝钢1 880 mm热轧试生产DP600双 相钢的组织性能[J]. 宝钢技术，2010（2）：45-53. link1
[11] 谭 文，韩 斌，汪水泽. CSP 工艺生产C-Mn-Cr、C-Mn-Si双 相钢组织性能对比[J]. 轧钢，2010，27（26）：25-27. link1
[12] 王国栋，刘相华，孙丽钢，等. 包钢CSP“超快冷”系统590 MPa 级C-Mn低成本热轧双相钢开发[J]. 钢铁，2008，43（3）：49-52. link1
[13] Shimizu T，Funakawa Y，Kaneko S. High strength steel sheets for automobile suspension and chassis use：High strength hotrolled steel sheets with excellent press formability and durability for critical safety parts [J]. JFE Technical Report，2004（4）： 25-31. link1
[14] 蔡明晖. 高延伸凸缘型铁素体/贝氏体钢的组织演变及力学行 为[D]. 沈阳：东北大学，2009. link1
[15] 董 毅，许云波，孙 浩，等. 700 MPa以上级低成本热轧超细 晶双相钢的开发[C]// 2010钢材质量控制技术、形状、尺寸精 度、表面质量控制与改善学术研讨会文集. 北京：2010.
[16] Murakami Toshio，Kinefuchi Masao，Nomura Masahiro. Effects of hot rolling conditions on the fatigue limit of ti added dual phase hot-rolled steel sheets [J]. Journal of the Japan Institute of Metals，2008，72（10）：832-838.
[17] Chen C Y，Yen H W，Kao F H. Precipitation hardening of highstrength low-alloy steels by nanometer-sized carbides [J]. Materials Science and Engineering A，2009，499：162-166. link1
[18] 段修刚，蔡庆伍，武会宾. Ti-Mo 全铁素体基微合金高强钢纳 米尺度析出相[J]. 金属学报，2011，47（2）：251-256. link1
[19] Takahiro Kashima，Youichi Mukai. Development of 780 MPa class high strength hot rolled steel sheet with super high flange formability [J]. Materials for Automotive Industry，2002，52 （2）：19-22.
[20] 雍岐龙. 钢铁材料中的第二相[M]. 北京：冶金工业出版，2006.
[21] Takehide Senuma. Present status of and future prospects for precipitation research in the steel industry [J]. ISIJ International， 2002，42（1）：1-12. link1
[22] Takehide Senuma. Physical metallurgy of modern high strength steel sheets [J]. ISIJ International，2001，41（6）：520-532. link1
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