Effect of Precipitate Phase Pretreatment on Microstructure and Mechanical Properties of High-strength Bolts

Wang Xu; Wang Ying; Wang Yang; Zhou Lei

doi:10.20057/j.1003-8620.2025-00007

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Effect of Precipitate Phase Pretreatment on Microstructure and Mechanical Properties of High-strength Bolts

Forming and Phase Transition | 更新时间：2025-11-06

- Effect of Precipitate Phase Pretreatment on Microstructure and Mechanical Properties of High-strength Bolts
- Special Steel Vol. 46, Issue 6, Pages: 134-141(2025)
- 作者机构：
  
  南京钢铁股份有限公司特钢事业部，南京 210035
- 作者简介：
- 基金信息：
- DOI：10.20057/j.1003-8620.2025-00007
  CLC： TG142
- Received：12 January 2025，
  
  Revised：2025-05-23，
  
  Accepted：26 May 2025，
  
  Published：30 November 2025
- 稿件说明：
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王旭,王莹,王杨等.析出相预处理对高强度螺栓显微组织和力学性能的影响[J].特殊钢,2025,46(06):134-141.

Wang Xu,Wang Ying,Wang Yang,et al.Effect of Precipitate Phase Pretreatment on Microstructure and Mechanical Properties of High-strength Bolts[J].Special Steel,2025,46(06):134-141.
王旭,王莹,王杨等.析出相预处理对高强度螺栓显微组织和力学性能的影响[J].特殊钢,2025,46(06):134-141. DOI： 10.20057/j.1003-8620.2025-00007.

Wang Xu,Wang Ying,Wang Yang,et al.Effect of Precipitate Phase Pretreatment on Microstructure and Mechanical Properties of High-strength Bolts[J].Special Steel,2025,46(06):134-141. DOI： 10.20057/j.1003-8620.2025-00007.

摘要

研究了不同热处理工艺对

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8 mm的42CrMoVNb高强度螺栓钢的显微组织、力学性能以及延迟断裂性能的影响，比较了不同的淬火、回火及析出相控制处理工艺对该钢材的组织和性能的影响。实验结果表明，经过1 100、1 200 ℃温度析出相控制处理的钢材，晶粒得到了有效细化，回火马氏体中碳化物析出量增多，有效提高了材料的强度与韧性。特别是在回火过程中，析出相控制处理对提高材料的抗拉强度和韧塑性有显著作用。延迟断裂试验结果表明，延迟断裂强度比（DFSR）随强度的增大而逐渐降低，42CrMoVNb钢均大于国标12.9级42CrMo钢的延迟断裂性能；经过析出相控制处理后的42CrMoVNb钢的延迟断裂强度比分别为0.77、0.76，延迟断裂性能明显优于相同强度等级下的常规淬回火处理后的42CrMoVNb钢，在14.9级强度等级下最佳工艺为1 100 ℃析出相控制处理+ 940 ℃淬火+595 ℃回火。

Abstract

The effects of different heat treatment processes on the microstructure， mechanical properties and delayed fracture properties of

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8 mm 42CrMoVNb high strength bolt steel were studied， and the effects of different quenching， tempering and precipitation phase control processes on the microstructure and properties of the steel were compared. The experimental results showed that the grain size of steel after 1 100 ℃ and 1 200 ℃ temperature precipitation phase control treatment was effectively refined， and the amount of carbide precipitation in tempered martensite increased， which effectively improved the strength and toughness of the material.Particularly， during the tempering process， precipitate phase control treatment had a remarkable impact on enhancing the tensile strength and ductility of the material. The results of delayed fracture test showed that the delayed fracture strength ratio （DFSR） decreased gradually with the increasd of strength， and the delayed fracture performance of 42CrMoVNb steel was higher than its 42CrMo steel of national standard 12.9 grade；.The delayed fracture strength ratios of 42CrMoVNb steel after precipitation phase control treatment were 0.77 and 0.76 respectively， the delayed fracture performance was significantly better than that of 42CrMoVNb steel after conventional quenching and tempering treatment at the same strength grade. The optimal process at the 14.9 strength grade was1 100 ℃ precipitated phase control treatment + 940 ℃ quenching +595 ℃ tempering.

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惠卫军，董瀚，翁宇庆 . 高强度螺栓钢的发展动向［J］. 机械工程材料， 2002 ， 26 （ 11 ）： 1 - 4 .

Kuduzović A ， Poletti M C ， Sommitsch C ， et al . Investigations into the delayed fracture susceptibility of 34CrNiMo6 steel， and the opportunities for its application in ultra-high-strength bolts and fasteners ［J］. Materials Science and Engineering： A ， 2014 ， 590 ： 66 - 73 .

刘　雷，李培耀 . 高强度螺栓材料的研究现状与趋势［J］. 上海工程技术大学学报， 2010 ， 24 （ 2 ）： 173 - 179 .

姜周华，龚　伟，王　承，等 . 超高强度钢高纯净熔炼技术［J］. 航空材料学报， 2017 ， 37 （ 6 ）： 7 - 15 .

陈华锋 . 高强度螺栓氢脆断裂失效的表征研究［D］. 北京：机械科学研究总院， 2009 .

方　栋，陈继志 . 高强度螺栓螺纹根部应力集中的有限元分析［J］. 材料开发与应用， 2007 ， 22 （ 2 ）： 37 - 39 .

吴湘斌，吴昌玲 . 国内外紧固件工业及紧固件用钢现状与发展趋势［J］. 安徽冶金， 2002 （ 3 ）： 25 - 29 .

胡鹏天，石永久，王元清 . 12.9级及以上高强度螺栓研发及其工程应用研究［C］. 北京：全国现代结构工程学术研讨会暨全国索结构技术交流会， 2012 .

亓海全，雍岐龙，雍　兮，等 . 0.02～0.05Ti微合金化钢中Ti（C， N）的Ostwald熟化规律［J］. 特殊钢， 2010 ， 31 （ 1 ）： 4 - 5 .

丁丽娟，李铸铁，王军庆，等 . 热处理工艺对Cr-Mo-（V）型轴承钢组织和性能的影响［J］. 金属热处理， 2019 ， 44 （ 6 ）： 141 - 145 .

Yang Z G ， Zhang J M ， Li S X ， et al . Fatigue behavior of fine-grained high strength steel 42CrMoVNb ［J］. Acta Metallurgica Sinica -Chinese Edition ， 2004 ， 40 （ 4 ）： 367 - 372 .

刘　祥，杜群力，李　新 . 加热工艺对Nb-Ti微合金钢奥氏体晶粒长大的影响［J］. 钢铁， 2019 ， 54 （ 9 ）： 116 - 120+131 .

Zhang C L ， Liu Y Z ， Jiang C ， et al . Effects of niobium and vanadium on hydrogen-induced delayed fracture in high strength spring steel ［J］. Journal of Iron and Steel Research International ， 2011 ， 18 （ 6 ）： 49 - 53 .

黄辉辉 . Ti-Nb-Mo复合微合金化铁素体钢第二相析出行为及强化机理研究［D］. 武汉：武汉科技大学， 2018 .

Zhang S Q ， Huang Y H ， Sun B T ， et al . Effect of Nb on hydrogen-induced delayed fracture in high strength hot stamping steels ［J］. Materials Science and Engineering： A ， 2015 ， 626 ： 136 - 143 .

Li X F ， Wang Y F ， Zhang P ， et al . Effect of pre-strain on hydrogen embrittlement of high strength steels ［J］. Materials Science and Engineering： A ， 2014 ， 616 ： 116 - 122 .

汪杨鑫，赵秀明，毛向阳，等 . SCr420H钢奥氏体晶粒长大动力学［J］. 钢铁， 2018 ， 53 （ 7 ）： 80 - 84+104 .

惠卫军，董　瀚，王毛球，等 . 1300 MPa级高强度螺栓钢［J］. 钢铁， 2002 ， 37 （ 3 ）： 37 - 42 .

Michler T ， Naumann J . Microstructural aspects upon hydrogen environment embrittlement of various bcc steels ［J］. International Journal of Hydrogen Energy ， 2010 ， 35 （ 2 ）： 821 - 832 .

燕友增，孙宏飞，高　鹏，等 . 42CrMoVNb高强度螺栓钢的热处理研究［J］. 新材料产业， 2011 （ 3 ）： 75 - 77 .

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