Cr12MoV钢真空热处理组织和性能研究
Research on Microstructure and Properties of Cr12MoV Steel after Vacuum Heat Treatment
邓莉萍，罗军明，苏倩
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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；真空热处理； 组织；性能
英文关键字：Cr12MoV;vacuum heat treatment; microstructure ;properties
中文摘要：采用固溶双细化处理对Cr12MoV钢进行预备热处理，而后分别进行真空热处理和普通热处理，对其硬度、冲击韧度、抗弯强度、耐磨性进行测定，并观察其显微组织和断口形貌。结果表明：由于组织中碳化物以粒状，均匀地分布于基体中，Cr12MoV钢经真空热处理后，材料的冲击韧性、抗弯强度、耐磨性均高于普通热处理。其冲击韧性、抗弯强度分别达到了8.347J·cm-2和1732.6MPa，相对于普通热处理，分别提高57.6%和16.9%。
英文摘要：After Solution and double-refine treatment as preheat treatment and vacuum heat treatment or ordinary heat treatment as final heat treatment, the hardness,impact toughness, bending strength,wear resistance,microstructure and fracture morphology of Cr12MoV steel were studied.The results indicated that with granular carbide evenly distributed in matrix ,the impact toughness ,bending strength and wear resistance of Cr12MoV steel after vacuum heat treatment are better than those after ordinary heat treatment . After vacuum heat treatment,the impact toughness and bending strength of the samples are reached 8.347J·cm-2 and 1732.6MPa respectively.In comparison to the samples with ordinary heat treatment , they increase 57.6% and 16.9% respectively.