Influence of Sulfur Content on Inclusion and Fatigue Properties of 18CrNiMo7-6 Gear Steels

Yu Wenchao; Xie Dirong; Shi Jie; Wang Maoqiu

doi:10.20057/j.1003-8620.2023-00091

您当前的位置：

首页 >

文章列表页 >

Influence of Sulfur Content on Inclusion and Fatigue Properties of 18CrNiMo7-6 Gear Steels

Application and Service | 更新时间：2025-05-09

- Influence of Sulfur Content on Inclusion and Fatigue Properties of 18CrNiMo7-6 Gear Steels
- Special Steel Vol. 45, Issue 1, Pages: 111-116(2024)
- 作者机构：
  
  钢铁研究总院有限公司特殊钢研究院，北京 100081
- 作者简介：
- 基金信息：
- DOI：10.20057/j.1003-8620.2023-00091
  CLC： TF142.3
- Received：25 May 2023，
  
  Published：30 January 2024
- 稿件说明：
移动端阅览
尉文超,谢地荣,时捷等.S含量对18CrNiMo7-6齿轮钢中夹杂物和疲劳性能的影响[J].特殊钢,2024,45(01):111-116.

Yu Wenchao,Xie Dirong,Shi Jie,et al.Influence of Sulfur Content on Inclusion and Fatigue Properties of 18CrNiMo7-6 Gear Steels[J].Special Steel,2024,45(01):111-116.
尉文超,谢地荣,时捷等.S含量对18CrNiMo7-6齿轮钢中夹杂物和疲劳性能的影响[J].特殊钢,2024,45(01):111-116. DOI： 10.20057/j.1003-8620.2023-00091.

Yu Wenchao,Xie Dirong,Shi Jie,et al.Influence of Sulfur Content on Inclusion and Fatigue Properties of 18CrNiMo7-6 Gear Steels[J].Special Steel,2024,45(01):111-116. DOI： 10.20057/j.1003-8620.2023-00091.

摘要

以

［S］为0.002%（低S含量）和0.022%（高S含量）的两种18CrNiMo7-6齿轮钢为研究对象，参照齿轮热处理工艺获得伪渗碳试样，并对其力学性能、显微组织、疲劳性能和夹杂物分布进行了分析表征。结果表明，两种齿轮钢的强度基本相当，而高S含量试验钢具有更好的塑性和低温冲击韧性，并且其疲劳极限、疲劳寿命均优于低S含量试验钢，疲强比由0.445提高到0.479。S含量显著影响钢中的夹杂物分布情况：低S含量试验钢中夹杂物以MnS-Oxide为主，数量较少，同时尺寸更大；而高S含量试验钢夹杂物以CaS-MnS-Oxide复合型夹杂物为主，数量提高1倍以上，但尺寸更为细小。高S含量试验钢采用Ca处理工艺对夹杂物进行改性，夹杂物尺寸明显细化，有利于钢的塑韧性提升，并改善疲劳性能。

Abstract

In this paper， two kinds of 18CrNiMo7-6 gear steels with sulfur content of 0.002% （low sulfur content） and 0.022% （high sulfur content） were studied. Pseudo-carburizing samples were obtained by reference to gear heat treatment process， and the effects of sulfur content on mechanical properties， microstructure， fatigue properties and inclusion distribution of the steels were investigated. The results show that the strength of the two steels is basically similar， while the steel with high sulfur content has better plasticity and low temperature impact toughness. Meanwhile， its fatigue limit and fatigue life are better than those of the low sulfur content steel， the fatigue ratio increases from 0.445 to 0.479. Sulfur content significantly affects the distribution of inclusions in steel， the inclusions in low sulfur content steel are mainly composed of MnS and oxides with less quantity but larger size， while the inclusions in the high sulfur content steel are mainly complex inclusions composed of Cas， MnS and oxides with more than doubled quantity but smaller size. By employing Ca treatment technique， the inclusion size of high sulfur content steel is obviously refined， which favors better mechanical properties and fatigue performance of steel.

关键词

Keywords

references

陈宣宇，曹建春，周晓龙，等 . 国内外易切削钢的研究进展及展望［J］. 热加工工艺， 2016 ， 45 （ 24 ）： 25 - 28 .

姜周华，孙萌，李阳，等 . 汽车用特殊钢中夹杂物控制技术的研究进展［J］. 材料与冶金学报， 2019 ， 18 （ 3 ）： 159 - 168 .

乔晓阳，裴小芳，崔冕，等 . 易切削齿轮钢22CrMoHS的开发［J］ . 特殊钢， 2020 ， 41 （ 3 ）： 32 - 34 .

轩康乐，刘栋林，俞杰，等 . 碲处理改善汽车曲轴用非调质钢38MnVS6硫化物形貌的研究［J］. 特殊钢， 2022 ， 43 （ 6 ）： 79 - 82 .

朱浩然，刘年富，周蕾，等 . 镁处理对45钢中夹杂物的改质效果［J］. 特殊钢， 2022 ， 43 （ 1 ）： 6 - 10 .

Zhang T ， Liu C ， Mu H ， et al . Inclusion evolution after calcium addition in Al-killed steel with different sulphur content ［J］. Ironmaking & Steelmaking ， 2018 ， 45 （ 5 ）： 447 - 456 .

王之香，南海，张锦文 . 高铁齿轮用钢18CrNiMo7-6电渣生产工艺实践［J］. 特殊钢， 2023 ， 44 （ 3 ）： 29 - 33 .

田俊，王德永，屈天鹏，等 . 钙、镁在含硫钢中硫化物变性过程中的作用［J］. 钢铁， 2017 ， 52 （ 11 ）： 27 - 31 .

Xue Y J ， Yan Y M ， Yu W C ， et al . Microstructure and fatigue properties of 17Cr2Ni2MoVNb gear steel after gas carburizing and low-pressure carburizing ［J］. International journal of Fatigue ， 2023 ， 167 ： 107314 .

He X F ， Wang M Q ， Hu C F ， et al . Study of the relationship among total oxygen， inclusions and fatigue properties of gear steel ［J］. Materials Science and Engineering： A ， 2021 ， 827 ： 141999 .

张宏艳，田志红，邵肖静，等 . 改质工艺对高强度低合金钢夹杂物特性的影响［J］. 中国冶金， 2021 ， 31 （ 2 ）： 31 - 37 .

郭帅，朱航宇，韩赟，等 . 夹杂物对钢塑性和韧性的影响研究进展［J］. 钢铁研究学报， 2022 ， 34 （ 8 ）： 713 - 726 .

Views

下载量

CSCD

CNKI被引量

Alert me when the article has been cited

提交

Tools

Publicity Resources

Comparative Analysis of 3%Cr Roller Steel by Rare Earth Refining and Electroslag Remelting

Current Status and Prospects of Fatigue Performance for 300M Steel by Single Vacuum Process for Landing Gear of Commercial Aircraft

Effect of Heat Treatment Regime on Mechanical Properties and Microstructure of 0.37C-0.6Mn-0.82Cr Steel

Effect of Forging Process on Microstructure and Properties of Fe10Cr10Co Soft Magnetic Alloy

Development of M42 and above 12.9 Grade High Hardenability 42CrMoVNb Bolt Steel

Related Author

Yuan lin

Hu Xiaoqiang

Liu Yang

Li Dianzhong

Xie Jing

Chen Wei

Han Shun

Li Yong

Related Institution

Institute of Metal Research， Chinese Academy of Sciences

Baosteel Roll Technology Co.， Ltd.

Technology Center， Bao Wu Special Metallurgy Co.， Ltd.

Technology Center， Fushun Special Steel Co.， Ltd.

Shanghai Aerospace Equipments Manufacturer Co.， Ltd.

⁰