活性屏等离子氮碳共渗温度对3Cr13不锈钢组织和性能的影响  

Effect of Nitrocarburizing Temperature on Microstructure and Properties of Active Screen Plasma Nitrocarburizing Layer of 3Cr13 Stainless Steel

作　　者：张玲玲[1,2,3] 侯惠君[2,3] 詹肇麟[1] 韦春贝[2,3] 孔维欢 

机构地区：[1]昆明理工大学材料科学与工程学院,云南昆明650093 [2]广东省现代表面工程技术重点实验室,广东广州510651 [3]广州有色金属研究院新材料研究所,广东广州510651

出　　处：《热加工工艺》2016年第4期113-116,共4页Hot Working Technology

基　　金：广州市科技计划项目(13510007)

摘　　要：采用活性屏等离子氮碳共渗技术对3Cr13不锈钢在不同温度下进行处理,并采用光学显微镜和X射线衍射仪对渗层的组织形貌和成分进行分析,利用显微硬度计、球-盘摩擦磨损试验仪、扫描电镜研究了材料的硬度及摩擦磨损性能。结果表明,随处理温度升高,试样表层相组成由α'_N相+ε相+γ'相逐渐转变成α相+CrN相+ε相,试样表面显微硬度增加,磨损率降低约一个数量级,耐磨性能提高。Active screen plasma nitrocarburizing experiments of 3Cr13 stainless steel were carried out at different temperatures. The microstrueture and composition of the nitroearburized layer were characterized through microscopy and XRD. The microhardness and sliding wear behaviors were determined with microhardness testing, ball-on-disc wear tester and SEM. The results show that with the nitrocarburzing temperature increasing, the surface phases gradually precipitate CrN, α and e from the prime α＇N, γ＇ and e, and the surface hardness improves. The wear rate of nitrocarburized samples decreases by one order compared with untreated sample, and the wear resistance rises.

关 键 词：3Cr13不锈钢 活性屏等离子氮碳共渗 温度 组织 耐磨性 

分 类 号：TG156.8[金属学及工艺—热处理]