Composition Design and Microstructure–Property Relationships of a Novel High-Strength， High-Toughness， Low-Cost Non-Quenched and Tempered Steel

Yuan Changbo; Zhu Lei; Wang Yufeng; Dou Shengtao; Li Guoqiang; Shi Quanqiang; Wang Wei

doi:10.20057/j.1003-8620.N250602

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Composition Design and Microstructure–Property Relationships of a Novel High-Strength， High-Toughness， Low-Cost Non-Quenched and Tempered Steel

更新时间：2026-04-07

- Composition Design and Microstructure–Property Relationships of a Novel High-Strength， High-Toughness， Low-Cost Non-Quenched and Tempered Steel
- Special Steel Pages: 1-6(2026)
- 作者机构：
  
  1.青岛特殊钢铁有限公司，青岛 266409
  2.中国科学院金属研究所，沈阳 110016
- 作者简介：
- 基金信息：
- DOI：10.20057/j.1003-8620.N250602
  CLC： TG113.1
- Received：19 December 2025，
  
  Revised：2026-01-12，
  
  Accepted：13 January 2026，
  
  Online First：09 February 2026，
- 稿件说明：
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袁长波,朱雷,王玉峰等.新型高强高韧非调质钢的成分设计与组织性能[J].特殊钢,

Yuan Changbo,Zhu Lei,Wang Yufeng,et al.Composition Design and Microstructure–Property Relationships of a Novel High-Strength， High-Toughness， Low-Cost Non-Quenched and Tempered Steel[J].Special Steel,
袁长波,朱雷,王玉峰等.新型高强高韧非调质钢的成分设计与组织性能[J].特殊钢, DOI：.

Yuan Changbo,Zhu Lei,Wang Yufeng,et al.Composition Design and Microstructure–Property Relationships of a Novel High-Strength， High-Toughness， Low-Cost Non-Quenched and Tempered Steel[J].Special Steel, DOI：.

摘要

本研究在目前商用非调质钢的基础上创新性提出“降C增Si加Mn”的成分设计思想，通过成分调控和组织优化研发一种抗拉强度达到1 300 MPa级新型高强高韧低成本非调质钢。研究结果表明，新型非调质钢（QGF17）成分（质量分数）/%为0.19C，1.92Si，2.90Mn，0.56Cr，0.012P，0.004S，钢中Si的添加优化了其贝氏体显微组织，致使其组织中细长贝氏体（LB）组织的体积分数增加，晶粒尺寸由18 μm细化至11 μm，高角晶界（HAGB）分数由28.5%显著提升至59.1%，且位错密度增加，致使其晶界和板条界面附近形成了局部高位错密度区。与FAS2225钢相比，新型非调质钢的显微硬度和机械性能均得到显著提高。其中，硬度由318 HV 提升至473 HV，屈服强度和抗拉强度分别由710、955 MPa提升至973、1 322 MPa，-20 ℃ K

由16 J提高至29 J。新型非调质钢具有更高

的应变硬化能力和较高的冲击韧性，断口形貌分析结果表明，尽管两种材料的冲击断裂模式均为准解理断裂，但非调质钢在靠近V型缺口处观察到明显的塑性变形带的存在，断口形貌由FAS2225的河流花样准解理面转变为更细小的准解理小平面。研究结果证实，新型非调质钢通过精简合金添加、优化成分配比降低生产成本，解决了传统高强非调质钢“强度提升与韧性恶化、成本控制难以兼顾”的行业痛点，为高性能非调质钢的工程化应用提供了新的技术路径。

Abstract

Based on currently commercial non-quenched and tempered steels， this study innovatively proposes a compositional design strategy of “reduced C， increased Si， and added Mn.” Through compositional regulation and microstructural optimization， a novel high-strength， high-toughness， and low-cost non-quenched and tempered steel with a tensile strength of approximately 1 300 MPa was successfully developed. The results indicate that the novel non-quenched and tempered steel （QGF17） has the following chemical composition （

/%）： 0.19C， 1.92Si， 2.90Mn， 0.56Cr， 0.012P， and 0.004S. The addition of Si optimizes the bainitic microstructure， leading to an increased volume fraction of lath bainite （LB）. Meanwhile， the grain size is refined from 18 μm to 11 μm， the fraction of high-angle grain boundaries （HAGBs） increases markedly from 28.5% to 59.1%， and the dislocation density also rises. As a result， localized high-dislocation-density regions form near grain boundaries and lath interfaces. Compared with FAS2225 steel， the novel non-quenched and tempered steel exhibits substantially improved， especially the hardness and mechanical properties. The HV hardness increases from 318 to 473， the yield strength and tensile strength rise from 710 MPa and 955 MPa to 973 MPa and 1 322 MPa， respectively， and the impact energy at -20 °C increases significantly from 16 J to 29 J. In addition， the novel steel demonstrates a higher strain-hardening capability and excellent impact toughness. The SEM fracture analysis reveals that although both steels exhibit quasi-cleavage fracture characteristics under impact loading， a pronounced plastic deformation zone is observed near the V-notch region in the novel non-quenched and tempered steel. Correspondingly

， the fracture morphology evolves from river-pattern quasi-cleavage facets in FAS2225 steel to finer quasi-cleavage micro-facets in the novel steel. These results confirm that， through simplified alloying and optimized compositional design， the developed non-quenched and tempered steel effectively reduces production costs while overcoming the long-standing trade-off between strength enhancement and toughness degradation in conventional high-strength non-quenched steels， thereby providing a promising technological pathway for the engineering application of high-performance non-quenched and tempered steels.

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references

王占花，惠卫军，谢志奇，等 . 回火对钒钛微合金化Mn-Cr系贝氏体型非调质钢组织和性能的影响［J］. 金属学报， 2020 ， 56 （ 11 ）： 1441 - 1451 .

郭　皓，樊晨康，孙旭兵，等 . 35MnVS非调质钢针状铁素体形核原位观察［J］. 重型机械， 2023 （ 4 ）： 78 - 83 .

王占花，惠卫军，张永健，等 . 控轧控冷中碳非调质钢的高周疲劳性能［J］. 钢铁， 2019 ， 54 （ 3 ）： 69 - 75 .

Zhang Y P ， Li S Y ， Zhang Z ， et al . A review of heat treatment processes for bainitic steel ［J］. Journal of Materials Research and Technology ， 2025 ， 37 ： 279 - 307 .

Caballero F G ， Chao J ， Cornide J ， et al . Toughness of advanced high strength bainitic steels ［J］. Materials Science Forum ， 2010 ， 638-642 ： 118 - 123 .

Brunčko M ， Kirbiš P ， Anžel I ， et al . Evaluation of the impact and fracture toughness of a nanostructured bainitic steel with low retained austenite content ［J］. Materials ， 2023 ， 16 （ 5 ）： 2003 .

田紫维，姚彦欣，刘佳兴，等 . 冷却速度对微合金化中碳非调质钢组织和性能的影响［J］. 金属热处理， 2022 ， 47 （ 7 ）： 27 - 33 .

王旭，周蕾，王莹，等 . 控制轧制对Mn-Cr系贝氏体型非调质钢组织性能的影响［J］. 材料热处理学报， 2025 ， 46 （ 4 ）： 153 - 161 .

Xie H ， Du L X ， Hu J ， et al . Microstructure and mechanical properties of a novel 1000 MPa grade TMCP low carbon microalloyed steel with combination of high strength and excellent toughness ［J］. Materials Science and Engineering： A ， 2014 ， 612 ： 123 - 130 .

Sun L ， Han J ， Liu Y . Effect of V， Nb and Ti microalloying on the toughness of non-quenched and tempered forged steels ［J］. Materials Science and Engineering A ， 2023 ， 882 ： 145413- .

计芳芳，惠卫军，吴勇生，等 . 碳含量对贝氏体型冷作强化非调质钢的组织和力学性能的影响［J］. 特殊钢， 2010 ， 31 （ 4 ）： 68 - 70 .

Klemm-Toole J ， Benz J ， Vieira I ， et al . Strengthening mechanisms influenced by silicon content in high temperature tempered martensite and bainite ［J］. Materials Science and Engineering： A ， 2020 ， 786 ： 139419 .

Bhadeshia H K . High performance bainitic steels； proceedings of the Materials Science Forum， F， 2005 ［C］. Trans Tech Publ .

Caballero F G ， Allain S ， Puerta-velásquez J D ， et al . Exploring carbide-free bainitic structures for hot dip galvanizing products ［J］. ISIJ International ， 2013 ， 53 （ 7 ）： 1253 - 1259 .

刘年富，沈伟，田钱仁，等 . 汽车用非调质钢的发展现状及趋势［J］. 钢铁钒钛， 2024 ， 45 （ 2 ）： 115 - 124 .

Sung H K ， Lee S ， Shin S Y . Effects of start and finish cooling temperatures on microstructure and mechanical properties of low-carbon high-strength and low-yield ratio bainitic steels ［J］. Metallurgical and Materials Transactions A ， 2014 ， 45 （ 4 ）： 2004 - 2013 .

Shin S Y ， Hwang B ， Lee S ， et al . Correlation of microstructure and charpy impact properties in API X70 and X80 line-pipe steels ［J］. Materials Science and Engineering： A ， 2007 ， 458 （ 1-2 ）： 281 - 289 .

Y H S ， Y S S ， S L . Effect of cooling conditions on microstructures and mechanical properties in API X80 linepipe steels ［J］. Journal of the Korean Institute of Metals and Materials ， 2009 ， 47 （ 9 ）： 523 - 32 .

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