Effect of Nitrogen Content on Structure and Mechanical Properties of 500E Anti-Quake Reinforced Bar Steel 20MnVN

李宝秀

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Effect of Nitrogen Content on Structure and Mechanical Properties of 500E Anti-Quake Reinforced Bar Steel 20MnVN

更新时间：2026-01-21

- Effect of Nitrogen Content on Structure and Mechanical Properties of 500E Anti-Quake Reinforced Bar Steel 20MnVN
- Special Steel Vol. 37, Issue 5, Pages: 59-61(2016)
- 作者机构：
  
  1. 邢台钢铁有限责任公司技术中心,邢台,054027
  2. 河北省线材工程技术研究中心,邢台,054027
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：25 April 2016，
  
  Online First：05 August 2022，
  
  Published：05 August 2016
- 稿件说明：
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李宝秀. Effect of Nitrogen Content on Structure and Mechanical Properties of 500E Anti-Quake Reinforced Bar Steel 20MnVN[J]. Special Steel, 2016, 37(5): 59-61.
DOI：

李宝秀. Effect of Nitrogen Content on Structure and Mechanical Properties of 500E Anti-Quake Reinforced Bar Steel 20MnVN[J]. Special Steel, 2016, 37(5): 59-61. DOI：

摘要

研究的Φ5 mm 500E抗震钢筋20MnVN（/%:0.19~0.20C，0.23~0.26Si，1.26~1.31Mn，0.016~0.023P，0.006~0.012S，0.10~0.11V，0.0038~0.0163N）的生产流程为50t顶底复吹转炉-LF-160 mm×160 mm方坯连铸-控轧控冷工艺。结果表明

随着钢中氮含量增加，500E 20MnVN钢盘条拉伸断口的韧窝变深

口径增大，组织中铁素体含量由63.6%增加至74.8%；增加氮含量有助于20MnVN钢盘条屈服强度、抗拉强度和伸长率的提高，当氮含量由0.0038%增加到0.0163%时

该钢屈服强度、抗拉强度和伸长率分别由513 MPa、650 MPa和10.5%提高到571 MPa、703 MPa和13.0%。分析了V-N微合金化和V（C

N）析出的强韧化机理。

Abstract

The production flowsheet for studied Φ5 mm 500E anti-quake reinforced bar steel 20MnVN (/% ： 0.19-0.20C

0.23-0.26Si

1.26-1.31Mn

0. 016-0.023P

0.006-0.012S

0.10-0.11V

0.0038-0.0163N) is 50 t top and bottom combined blowing converter-LF-160 mm x 160 mm billet casting-rod control rolling and control cooling process. The results show that with increasing the nitrogen content in steel

the tough dimples of tensile fracture of 500E 20MnVN steel coil become deeper and their diameters become larger

and the ferrite content in structure increases from 63.6% to 74.8% ； increasing nitrogen content is available to increase the yield strength

tensile strength and elongation of 20MnVN steel coil

and with increasing the nitrogen content in steel from 0. 003 8% to 0.016 3%

the yield strength

tensile strength and elongation of steel increases respectively from 513 MPa

650 MPa and 10.5% to 571 MPa

703 MPa and 13.0%. The V-N microalloying and V(C

N) precipitated strengthening-toughing mechanism is analyzed.

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