Effects of Self-Tempering Temperature on Microstructure and Performance of Vanadium and Titanium Microalloyed 45MnVTi Non Quenched and Tempered Steel

薛伟江; 屈小波; 王军; 包耀宗

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Effects of Self-Tempering Temperature on Microstructure and Performance of Vanadium and Titanium Microalloyed 45MnVTi Non Quenched and Tempered Steel

更新时间：2026-01-21

- Effects of Self-Tempering Temperature on Microstructure and Performance of Vanadium and Titanium Microalloyed 45MnVTi Non Quenched and Tempered Steel
- Special Steel Vol. 42, Issue 6, Pages: 83-86(2021)
- 作者机构：
  
  1. 江苏永钢集团有限公司，张家港,215628
  2. 钢铁研究总院,北京,100081
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：12 April 2021，
  
  Online First：03 January 2022，
  
  Published：03 January 2021
- 稿件说明：
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薛伟江, 屈小波, 王军, et al. Effects of Self-Tempering Temperature on Microstructure and Performance of Vanadium and Titanium Microalloyed 45MnVTi Non Quenched and Tempered Steel[J]. Special Steel, 2021, 42(6): 83-86.
DOI：

薛伟江, 屈小波, 王军, et al. Effects of Self-Tempering Temperature on Microstructure and Performance of Vanadium and Titanium Microalloyed 45MnVTi Non Quenched and Tempered Steel[J]. Special Steel, 2021, 42(6): 83-86. DOI：

摘要

试验研究了Φ52 mm 45MnVTi钢终轧917~922 ℃水冷返红680~830 ℃的组织和力学性能。结果表明，随着返红温度的降低，钢材的屈服强度及抗拉强度不同程度的升高，韧性先升高再降低，组织类型为铁素体和珠光体。当返红温度750～770 ℃时，钢材组织为均匀细小的铁素体和珠光体组织，且试验钢的珠光体片间距平均2.39

μm

钢材的抗拉强度平均841 MPa，屈服强度平均547.5 MPa，平均冲击功50.5 J，强韧性匹配最佳，满足使用要求。

Abstract

The structure and mechenical properties of Φ52 mm 45MnVTi steel finished rolling at 917～922 ℃ and water-cooling-self-tempering with 680～830 ℃have been tested and researched.Results show that the microstructure of asprepared steel consists of ferrite and pearlite

with the decrease of self-tempering temperature

the yield strength and tensile strength of steel gradually increase

and toughness increases at first and then decreases. When the range of self-tempering temperature is 750 to 770 ℃

the microstructure of steel products is fine ferrite and pealite

and the test steel average value of tensile Strength 841 MPa

yield Strength 547.5 MPa

impact energy 50.5 J with an optimal match between the strength and toughness of steel and pearite lamellar spacing 2.39 μm

to meet the use requirements.

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