ISSN   1004-0595

CN  62-1095/O4

高级检索
刘红利, 刘晓红, 吉利, 李红轩, 周惠娣, 陈建敏. 高温氧化处理前后Inconel 718高温合金摩擦学性能的探究[J]. 摩擦学学报, 2018, 38(3): 274-282. DOI: 10.16078/j.tribology.2018.03.004
引用本文: 刘红利, 刘晓红, 吉利, 李红轩, 周惠娣, 陈建敏. 高温氧化处理前后Inconel 718高温合金摩擦学性能的探究[J]. 摩擦学学报, 2018, 38(3): 274-282. DOI: 10.16078/j.tribology.2018.03.004
LIU Hongli, LIU Xiaohong, JI Li, LI Hongxuan, ZHOU Huidi, CHEN Jianmin. Wide Temperature Range Tribological Property of Inconel 718 High-Temperature Alloy[J]. TRIBOLOGY, 2018, 38(3): 274-282. DOI: 10.16078/j.tribology.2018.03.004
Citation: LIU Hongli, LIU Xiaohong, JI Li, LI Hongxuan, ZHOU Huidi, CHEN Jianmin. Wide Temperature Range Tribological Property of Inconel 718 High-Temperature Alloy[J]. TRIBOLOGY, 2018, 38(3): 274-282. DOI: 10.16078/j.tribology.2018.03.004

高温氧化处理前后Inconel 718高温合金摩擦学性能的探究

Wide Temperature Range Tribological Property of Inconel 718 High-Temperature Alloy

  • 摘要: 为了研究高温氧化处理前后Inconel 718高温合金摩擦学性能的差异,对Inconel 718高温合金在1 000 ℃大气环境下进行高温热处理,并进行25~800 ℃宽温域摩擦试验. 利用扫描电子显微镜、三维轮廓仪、X射线衍射仪对Inconel 718高温合金的表面形貌、磨痕形貌、物相组成和结构进行分析. Inconel 718高温合金经热处理后物相组成发生了明显变化,晶化程度提高. 在表面形成了类网状凸起结构,其组成主要为Cr2Ti7O17和Cr2O3混合相,这是由于高温热处理使Inconel 718高温合金的Ti和Cr元素沿晶界发生了扩散,至表面后与大气中的氧反应,生成Cr2Ti7O17和Cr2O3混合相. 高温氧化后的Inconel 718高温合金摩擦系数和磨损率与未处理时相比有所降低,磨痕形貌有了明显变化,将这种变化归功于类网状凸起结构的减摩抗磨作用和其组成相中Cr2Ti7O17的润滑作用.

     

    Abstract: In order to investigate wide temperature range tribological property of Inconel 718 high-temperature alloy before and after high temperature oxidation, Inconel 718 high-temperature alloys were treated at 1 000 ℃ in air. Scanning electron microscopy and 3D surface mapping profiler were conduct to analyze the surface morphologies and worn surface morphologies of Inconel 718 high-temperature alloy. The X-Ray Diffraction was used to analyze the composition and structure of Inconel 718 high-temperature alloy. The results show that the degree of crystallization of Inconel 718 high-temperature alloy was improved after treating at 1 000 ℃, and a mesh-like heave structure formed on surface of treatled Inconel 718 high-temperature alloy which was composed of Cr2Ti7O17 and Cr2O3. During treating process, Cr and Ti atoms diffused upward along the grain boundaries, and reacted with oxygen to form Cr2Ti7O17 and Cr2O3. Compared with untreated sample, the coefficient of friction and wear rate of treated one were improved obviously, which was ascribed to the mesh-like heave structure.

     

/

返回文章
返回