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通过向桥梁结构钢HPS 70W中添加不同含量的铌元素,研究了合金元素铌对桥梁结构钢的力学性能、显微组织和析出相粒子的影响。结果表明,铌对桥梁结构钢HPS 70W低温韧性、强度和塑性有显著的作用。
The effect of niobium alloying elements on the mechanical properties, microstructure and precipitated particles of bridge structure steel was studied by adding different contents of niobium to the structural steel HPS 70W. The results show that niobium has a significant effect on the low temperature toughness, strength and ductility of HPS 70W bridge structure steel.