低碳高强度双相钢丝的组织与性能

对20双相钢丝的组织与性能进行了研究。结果表明，随着亚温淬火温度的升高，双相组织中马氏体的亚结构由孪晶型变成位错型，两相的变形能力和拉拔性能都得到改善。变形量是影响位错数量及其在双相组织中形成位错胞的主要因素。较高温度亚温淬火钢丝经深度拉拔(79％)后，能得到好的强度、弯曲次数和扭转次数的配合。

Microstructure and Properties of Low-carbon High Strength Dual Phase Steel Wire

Microstructure and properties of dual-phase steel wire were studied.It is shown that with the incresaing of subcritical quenching temperature,the substructure of martensite in dual-phase microstructure changes form twin-type to dislocation type,and the deformation capability and drawing properties of both phases are improved.The amount of deformation is a key factor that effect the amount of dislocation and the forming dislocation cell in dual-phase microstructure.After the steel wire of subcritical quenching at a higher temperature was deeply drawn to 79%,very high tensile strength with satisfactory numbers of bending and twising was gained.