铸造技术2016，Vol.37Issue(9)：1818-1820,3.DOI:10.16410/j.issn1000-8365.2016.09.005
钒对建筑用20MnSi螺纹钢组织性能的影响
Influence of Vanadium Content on Microstructure and Properties of 20MnSi Steel
郎凌云 1谢珂 2郭艳坤1
作者信息
- 1. 郑州工程技术学院,河南郑州450044
- 2. 华北水利水电大学,河南郑州450000
- 折叠
摘要
Abstract
The method of adding V into 20MnSi screw-thread steel to improve its mechanical properties was studied.The target steel samples were obtained successfully by smelting vanadium iron,manganese and silicon nitride manganese nitride in vacuum furnaces and then heat treatment.The results show,when the content of V is 0.015％,0.015％,0.04％ and 0.05％,the average grain size of the steel samples is 8.2,5.5,3.4 and 5.5 μm,respectively.Grain size reduces with the increase of vanadium content.The yield strength and tensile strength present parabola curves with vanadium content.The maximum value of yield strength and tensile strength are 886 MPa and 1 055 MPa when the vanadium content is 0.04％.Elongation increases with the increase of vanadium content,the elongation rate is up to 23.4％.The impact energy of steel samples is up to 99.8 J under room temperature.The improved steel samples can meet the national standards GB50204-2002.关键词
V/20MnSi螺纹钢/抗拉强度/屈服强度/伸长率Key words
vanadium/20MnSi screw-thread steel/tensile strength/yield strength/elongation分类
矿业与冶金引用本文复制引用
郎凌云,谢珂,郭艳坤..钒对建筑用20MnSi螺纹钢组织性能的影响[J].铸造技术,2016,37(9):1818-1820,3.
