【摘要】 研究了预变形对含铌低碳钢常规力学性能的影响。试验结果表明,在等温时效过程中预变形使含铌钢析出过程加快,析出的Nb(CN)变小,而且使含铌钢板条马氏体等温时效拉伸强度提高200MPa,其中第二相Nb(CN)粒子的强化效果约为130MPa,位错强化效果约为90MPa。更多还原

【Abstract】 The effect of pre-deformation on the mechanical properties of low carbon niobium-bearing steel is investigated in this paper. The results show that the precipitation process of niobium-bearing steel is accelerated in the isothermal aging due to the pre-deformation, and the particles of Nb(CN) become finer. The tensile strength of the steel has increased by 200 MPa,in which the interphase precipitation is 130 MPa and the dislocation precipitation,90 MPa.更多还原