RE-N-C-S-V-Nb多元共渗H13钢的热疲劳性能研究  

Research on the Thermal Fatigue Performance of H13 Steel by RE-N-C-S-V-Nb Multicomponent Permeating Treatment

作　　者：徐永礼[1] 庞祖高[2] 马宽猷[2] 韦曼云[2] 黄银燕[2] 

机构地区：[1]广西水利电力职业技术学院,南宁530023 [2]广西大学材料科学与工程学院,南宁530004

出　　处：《表面技术》2013年第5期35-38,44,共5页Surface Technology

基　　金：广西自然科学基金项目(2013GXNSFAA019303);广西高校大学生创新创业计划项目

摘　　要：利用扫描电镜、X射线衍射分析技术,对比经过RE-N-C-S-V-Nb多元共渗处理、气体渗氮处理和淬火+回火处理的H13钢三种试样的热疲劳性能,依据裂纹特征、裂纹结构,证明RE-N-C-S-V-Nb多元共渗H13钢具有较强的抗热疲劳性能。研究了多元共渗钒铌碳氮化物的细晶强化作用和位错强化作用,及其对钢热稳定性、高温硬度和抗氧化性的影响,从理论上揭示了RE-N-C-S-V-Nb多元共渗对热疲劳性能的强化机制。The thermal fatigue properties of three H13 steel samples were investigated by scanning electron microscope （SEM） and X-ray diffraction （XRD）. And the samples were treated by multicomponent permeating, gas nitriding, quenching and tempering, respectively. It is indicated that the H13 steel after RE-N-C-S-V-Nb multicomponent permeating treatment has much better thermal fatigue resistance performance according to the crack ＇ s characteristic and structure. The strengthening effects of fine-grain and dislocation by RE-N-C-S-V-Nb multicomponent permeating treatment, and their influence on the thermostability, high temperature hardness and oxidation resistance, are discussed. The strengthening mechanism on the thermal fatigue performance is revealed theoretically.

关 键 词：H13钢 多元共渗 热疲劳性 热稳定性 抗氧化性 

分 类 号：TG174.445[金属学及工艺—金属表面处理]