杨闯,马亚芹,刘静.TB8钛合金间歇式真空气体渗氮层的组织与性能[J].稀有金属材料与工程,2019,48(10):3136~3141.[Yang Chuang,Ma Yaqin,Liu Jing.Microstructure and property of intermittent vacuum gas nitriding layer on TB8 titanium alloy[J].Rare Metal Materials and Engineering,2019,48(10):3136~3141.]
TB8钛合金间歇式真空气体渗氮层的组织与性能
投稿时间:2018-04-18  修订日期:2018-05-02
中文关键词:  TB8钛合金  间歇真空  气体渗氮  组织  性能
基金项目:
中文摘要:
      为了提高表面硬度和耐磨性,对TB8钛合金进行间歇式真空气体渗氮处理。利用XRD和SEM分析了改性层的物相组成和显微组织,并对改性层的表面硬度和耐磨性进行了研究。结果表明,TB8钛合金经800 ℃间歇式真空气体渗氮4 h后,表面改性层物相主要由TiN、TiN0.3、Ti2AlN、及α-Ti组成,渗氮层组织致密,与基体结合良好,表面硬度为900-950HV,比基体硬度提高了近3倍,硬化层厚度为80-100 μm,由于表面形成了梯度硬化层,耐磨性得到了极大改善。
Microstructure and property of intermittent vacuum gas nitriding layer on TB8 titanium alloy
英文关键词:TB8 titanium alloy  intermittent vacuum  gas nitriding  microstructure  properties
英文摘要:
      The intermittent vacuum gas nitriding (IVGN) process was introduced to improve the surface properties of TB8 titanium alloys. The phase constitution and microstructure of the surface-modified layer were measured by XRD and SEM, and the surface hardness and wear resistance of the treated samples were analyzed. The results indicated that a surface-modified layer composed of TiN, TiN0.3, and Ti2AlN was formed after IVPN treatment at 800 ℃ for 4 h. The microstructure of modified layer was dense and had a good bonding with its substrate. The surface hardness of treated samples was up to 850-900 HV, which was three times as much as that of the untreated samples. The thickness of hardened layer was about 80-100μm. The wear resistance was greatly improved due to the formation of a gradient hardened layer.
作者单位E-mail
杨闯 贵州师范大学材料与建筑工程学院 276905017@qq.com 
马亚芹 贵州师范大学材料与建筑工程学院  
刘静 贵州师范大学材料与建筑工程学院  
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