60Si2Mn弹簧钢中夹杂物对高周疲劳特性影响研究

刘泳; 田志强; 马超; 赵海涛; 陈红卫; 曾亚南; 冯乾

doi:10.7513/j.issn.1004-7638.2020.06.026

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60Si2Mn弹簧钢中夹杂物对高周疲劳特性影响研究

doi: 10.7513/j.issn.1004-7638.2020.06.026

1. 河钢集团钢研总院工艺所, 河北石家庄 050023;
2. 华北理工大学冶金与能源学院, 河北唐山 063210

基金项目:

河北省自然科学基金钢铁联合基金(E2019318013)；河北省引进留学人员资助项目(C201817)

详细信息

通讯作者:
刘泳(1969-),男,河北石家庄人,高级工程师,通讯作者,主要从事长材品种开发,E-mail:sgliuyong@hbisco.com

中图分类号: TF762,TG115.5
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- 文章访问数: 290
- HTML全文浏览量: 45
- PDF下载量: 9
- 被引次数: 0
出版历程
- 收稿日期: 2020-06-09

Effect of Inclusions on High Cycle Fatigue Characteristics of Spring Steel

1. HBIS Group Technology Research Institute, Shijiazhuang 050023, Hebei, China;
2. School of Metallurgy and Energy, North China University of Technology, Tangshan 063210, Hebei, China

摘要

摘要: 利用Aspex夹杂物自动扫描电镜对60Si2Mn弹簧钢铸坯和钢材不同部位的夹杂物尺寸、数量进行分析,利用旋转弯曲疲劳试验机对材料的疲劳性能进行测试,揭示了钢中夹杂物的分布规律,同时分析了钢材不同缺陷形式和分布对材料发生失效的影响机理。结果表明,其旋转弯曲疲劳极限为σ_-1=764 MPa,疲劳极限与抗拉强度的比值0.45,具有良好的疲劳性能;夹杂物平均尺寸较大为24.9μm且分布在钢材近表面处,容易发生较低周次(<10⁶)的疲劳失效。
- 弹簧钢 /
- 60Si2Mn /
- 夹杂物 /
- Aspex /
- 疲劳性能 /
- 疲劳升降图
Abstract: In this paper the size and quantity of inclusions in different parts of spring steel slab and steel was determined by using Aspex inclusion automatic scanning electron microscope,and the fatigue properties of the materials were tested using a rotating bending fatigue tester.The rules of the distribution of inclusions in steel was revealed,and the influence mechanism of different defect forms and distributions of steel on the failure of materials was analyzed.The results show that when the rotation bending fatigue limit is σ_-1= 764 MPa,the ratio of fatigue limit to tensile strength is 0.45.Fatigue failure occurs at a lower cycle（＜10⁶）,when the average size of inclusions is greater than 24.9 μm and is distributed near the surface of the steel.
- spring steel /
- 60Si2Mn /
- inclusions /
- Aspex /
- fatigue performance /
- fatigue lifting diagram