预备热处理对Cr12MoV钢组织性能的影响
The influence of preheat treatment on microstructure and performance of Cr12MoV steel
邓莉萍，罗军明，苏倩
点击：2551次 下载：0次
作者单位：1.江西省材料科学与工程研究中心，江西 南昌 330063; 2.南昌航空大学 材料科学与工程学院，江西 南昌 330063; 3.南昌航空大学 分析测试中心，江西 南昌 330063
中文关键字：Cr12MoV；调质处理；组织；性能
英文关键字：Cr12MoV;quenching and tempering treatment; microstructure ;properties
中文摘要：对Cr12MoV失效模具进行组织、性能分析，并对其重新进行热处理，研究预备热处理工艺对模具组织、性能的影响。试验结果表明：采用调质处理代替球化退火作为Cr12MoV钢的预备热处理，更有利于碳化物形态的改变，对提高模具强韧性有比较明显的效果；通过调质处理后，材料的冲击韧性、抗弯强度分别达到了8.556J·cm-2和2183.5MPa，相对于球化退火试样，分别提高了13.7%和66.2%。
英文摘要：The microstructure and properties of failure Cr12MoV mould were analysed.Then it was heat treatment again.The effects of preheat treatment on microstructure and properties were studied. The experimental results showed that the quenching and tempering treatment as preheat treatment ,instead of spheroidizing annealing, has more benefits for the variation of cardbide morphology ,and can effectively improve the strength and toughness of Cr12MoV mould.Through quenching and tempering treatment, impact toughness and bending strength of the samples are reached 8.556 J·cm-2 and 2183.5 MPa respectively. In comparison to the spheroidizing annealing samples, they increase 13.7% and 66.2% respectively.