Investigation of Intercritical Annealing of Cold-rolled Ultra-high-strength Dual-phase Steel

He Jinguang; Hu Guoxian; Xiao Yuehua; Li Zhuang; Li Tao; Du Wenjing; Li Qiuyang

doi:10.20057/j.1003-8620.N250597

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Investigation of Intercritical Annealing of Cold-rolled Ultra-high-strength Dual-phase Steel

Forming and Phase Transition | 更新时间：2026-07-14

- Investigation of Intercritical Annealing of Cold-rolled Ultra-high-strength Dual-phase Steel
- Special Steel Vol. 47, Issue 4, Pages: 74-79(2026)
- 作者机构：
  
  文山学院冶金与材料学院，文山 663099
- 作者简介：
- 基金信息：
- DOI：10.20057/j.1003-8620.N250597
  CLC： TG142.41
- Received：16 December 2025，
  
  Revised：2026-01-29，
  
  Accepted：31 January 2026，
  
  Published：30 July 2026
- 稿件说明：
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何金光,胡国贤,肖月华等.超高强冷轧双相钢的临界区退火工艺探讨[J].特殊钢,2026,47(04):74-79.

He Jinguang,Hu Guoxian,Xiao Yuehua,et al.Investigation of Intercritical Annealing of Cold-rolled Ultra-high-strength Dual-phase Steel[J].Special Steel,2026,47(04):74-79.
何金光,胡国贤,肖月华等.超高强冷轧双相钢的临界区退火工艺探讨[J].特殊钢,2026,47(04):74-79. DOI： 10.20057/j.1003-8620.N250597.

He Jinguang,Hu Guoxian,Xiao Yuehua,et al.Investigation of Intercritical Annealing of Cold-rolled Ultra-high-strength Dual-phase Steel[J].Special Steel,2026,47(04):74-79. DOI： 10.20057/j.1003-8620.N250597.

摘要

针对超高强冷轧双相钢化学成分（质量分数/%）0.220C，0.470Si，2.500Mn，0.410Cr，0.050Al，0.020Nb，在连续退火热模拟试验机上采用临界区退火实验，以验证退火工艺对组织及机械性能的影响。结果表明，实验钢经临界区退火后，得到铁素体+马氏体双相组织。马氏体造成双相钢的高强度。在退火过程中有碳化物析出，造成沉淀强化。钢中存在残余奥氏体，有助于双相钢在具有高强度的同时，保持足够的塑性。在临界区温度退火，随着退火时间延长，实验钢进入奥氏体长大的平衡阶段，抗拉强度逐渐升高，伸长率逐渐降低。保温时间超过180 s后，开始趋于稳定。820 ℃保温180 s时，实验钢抗拉强度为1 350 MPa、屈服强度为745 MPa、屈强比为0.55、伸长率为8%、强塑积为10 800 MPa·%，获得了综合性能良好的超高强冷轧双相钢。

Abstract

Cold-rolled ultrahigh-strength dual-phase steel（chemical composition/%：0.220C，0.470Si， 2.500Mn，0.410Cr，0.050Al，0.020Nb） was intercritical annealed by a laboratory continuous annealing simulation machine to investigate the effect of annealing processes on microstructure and mechanical properties. The results show that a microstructure containing ferrite and martensite can be obtained. The martensite phase contributes to the high strength of dual-phase steel. Carbide precipitation during intercritical annealing contributes to precipitation strengthening. The presence of the retained austenite contributes to the combination of high strength and ductility of dual-phase steel. During intercritical annealing， prolonging the holding time leads the steel into an equilibrium stage of austenite growth. Consequently， the tensile strength gradually increases while the elongation decreases， both tending to stabilize after holding for more than 180 s. Excellent comprehensive mechanical properties that the tensile strength 1 350 MPa， yield strength 745 MPa， yield strength ratio 0.55， elongation 8%， and the strength-plasticity-product 10 800 MPa·% can be obtained when the cold-rolled ultrahigh-strength dual-phase steel holds 180 s at 820 ℃.

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侯晓英，殷继丽，丁明凯，等 . 钒微合金化双相钢的组织形貌特征及性能分析［J］. 钢铁研究学报， 2025 ， 37 （ 7 ）： 888 - 897 .

康永林，朱国明 . 中国汽车发展趋势及汽车用钢面临的机遇与挑战［J］. 钢铁， 2014 ， 49 （ 12 ）： 1 - 7 .

Zhang X R ， Wang L ， Wang Y L ， et al . Strength-toughness enhancement in sub-micron heterogeneous lamellar ferrite-martensite dual-phase steel at -84 ℃ extreme low-temperature conditions ［J］. Materials & Design ， 2025 ， 260 ： 115088 .

Roodgari M R ， Jamaati R ， Jamshidi Aval H . A new method to produce dual-phase steel ［J］. Materials Science and Engineering： A ， 2021 ， 803 ： 140695 .

Shankar G ， Gayatri V ， Suwas S . Application of Microstructural Engineering to Produce Third Generation Dual-Phase Steel Having Lean Alloy Composition ［J］. Journal of Materials Engineering and Performance ， 2025 ， 1059 - 9495 .

Jamaati R ， Ataya S ， Alrasheedi N H ， et al . Effect of carbon content on the martensite morphology， texture， and mechanical properties of dual-phase steels ［J］. Journal of Materials Research and Technology ， 2025 ， 39 ： 9477 - 9488 .

Liu L ， He J Z ， Li L J ， et al . Making ultrahigh-strength dual-phase steels tough： Experiment and simulation ［J］. Journal of Materials Science & Technology ， 2025 ， 226 ： 302 - 316 .

甄维静，陈俊东，李永亮，等 . 退火工艺对 1 180 MPa 级双相钢显微组织和力学性能的影响［J］. 钢铁钒钛， 2020 ， 41 （ 4 ）： 145 - 149 .

Shi L S ， Wang H ， Yao S J ， et al . A systematic framework for inverse analysis of critical microstructural features governing ductile fracture in dual-phase steels： Global-scale ［J］. Metallurgical and Materials Transactions A ， 2026 ， 57 （ 1 ）： 427 - 444 .

Gao B ， Chen X F ， Pan Z Y ， et al . A high-strength heterogeneous structural dual-phase steel ［J］. Journal of Materials Science ， 2019 ， 54 （ 19 ）： 12898 - 12910 .

李伟，朱晓东 . 临界区加热温度对低碳当量冷轧超高强双相钢组织及性能的影响［J］. 宝钢技术， 2017 （2）：： 15 - 18 .

Hansen S S ， Pradhan P R . Fundamentls of dual phase steels ［M］， edited. by R. A. Kot and B .L.Bramfitt， TMS/AIME， New York ， 1981 ， 113 - 115 .

Headley T J ， Brooks J A . A New Bcc-Fcc Orientation Relationship Observed between Ferrite and Austenite in Solidification Structures of Steels ［J］. Metallurgical and Materials Transactions A ， 2002 ， 33 （ 1 ）： 5 - 15 .

Waterschoot T ， de Cooman B C ， Vanderschueren D . Influence of run-out table cooling patterns on transformation and mechanical properties of high strength dual phase and ferrite-bainite steels ［J］. Ironmaking & Steelmaking ， 2001 ， 28 （ 2 ）： 185 - 190 ..

邓天勇，许云波，袁向前，等 . 含Nb低碳钢相变温度Ar3预测模型［J］. 金属学报， 2007 ， 43 （ 10 ）： 1091 - 1095 .

李伟，朱晓东 . 临界区退火对不同硅含量超高强双相钢组织和性能及加工硬化行为的影响［J］. 宝钢技术， 2017 （ 5 ）： 21 - 26 .

赵征志，佟婷婷，赵爱民，等 . 1470 MPa级双相钢的性能特征与强韧化机制［J］. 材料研究学报， 2014 ， 28 （ 11 ）： 828 - 834 .

Calcagnotto M ， Ponge D ， Raabe D . On the Effect of Manganese on Grain Size Stability and Hardenability in Ultrafine-Grained Ferrite/Martensite Dual-Phase Steels ［J］. MMetallurgical and Materials Transactions A ， 2012 ， 43 （ 1 ）： 37 - 46 .

Liu L ， Li L J ， Liang Z Y ， et al . Towards ultra-high strength dual-phase steel with excellent damage tolerance： The effect of martensite volume fraction ［J］. International Journal of Plasticity ， 2023 ， 170 ： 103778 .

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