STUDY OF V—N MICROALLOYED STEEL FOR REINFORCING BARS
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摘要: 研究了在20MnSi钢中添加高氮钒合金Nitrovan 12对钢的力学性能的影响。结果表明,在钒含量相同的情况下,与 80FeV相比,添加Nitrovan 12的钢,抗张强度可提高 135MPa,屈服强度可提高 117.5MPa;在保持强度相同或相近的情况下,添加Nitrovan 12的钢可节约33.3%以上的钒。钢中添加Nitrovan 12合金,充分利用了廉价的氮元素,促进了V(C,N)的析出,提高了V的沉淀强化效果。研制出可满足Ⅲ级钢筋技术指标要求的经济型建筑用钢筋。Abstract: The effect of adding nitrogen enriched vanadium alloy (Nitrovan 12) into 20MnSi steel was investigated on the mechanical properties of the steel above.The results show under same vanadium content condition,the tensile strength and yield strength of Nitrovan 12 addded steel increase by 135 MPa and 117.5 MPa respectively compared to 80FeV added steel. Under the Same or similar Strength condition, the amount of Vanadium addition can be reduced by over 33.3% using Nitrovan 12 compared to 80FeV.By adding Nitrovan 12 alloy into the steel,the cheap nitrogen element can be fully used. The nitrogen promotes precipitation of V(C,N) in V-bearing steel and improves the effect of Vanadium precipitation strengthening.Based on the experiment results, the economical grade Ⅲ reinforcing bars was developed.
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