合金元素Mo与V对建筑用耐火钢的影响

Effect of Alloy Elements Mo and V on Fire-resistant Steels Used in Buildings

建筑用耐火钢的使用不仅要求其性能等同或优于常规建筑用钢而且还需要在保证抗震性、焊接性和其它性能的同时增加高温时的强度。通过对比合金元素含量不同的建筑用耐火钢的力学性能和显微组织,研究了合金元素Mo与V对建筑用耐火钢高温屈服强度的影响。实验结果表明Mo、V的复合添加是提高耐火钢高温屈服强度的有效方法。

The fire-resistant steels used in buildings should not only possess the properties equal to or better than those of conventional steels used in buildings but also possess the performance of earthquake resistance, weldability and other properties for increase in steel＇s elevated-temperature strength. This paper describes fundamental studies on the effects of alloying elements Mo and V on elevated-temperature yield strength through the comparison between the mechanical properties and microstructure of fire-resistant steels with different content of alloy elements. The results show that it is an effective way to use combined Mo-V addition for increase in the elevated-temperature yield strength.