中南大学学报（自然科学版）2016，Vol.47Issue(6)：1878-1887,10.DOI:10.11817/j.issn.1672-7207.2016.06.009
离心压缩机叶片材料FV520B冲蚀过程演变规律
Erosion variation law of impeller’s material FV520B used in centrifugal compressor
摘要
Abstract
To study the erosion variation law of impeller’s material FV520B used in centrifugal compressor, incremental erosion tests were carried out on the high-speed erosion experimental system by simulating the impeller’s actual working conditions. The erosion behaviors, surface morphology, metallurgical structure and residual stress were studied systematically. The results show that the transition and stable period of erosion exist at different impact angles. At the impact angles of 24°and 90°, the erosion rate increases first, and then decreases, and finally becomes stable. But at the impact angles of 12°and 60°, the erosion rate gradually reduces during the transition period, and then to be stable. As the erosion proceeds, the surface roughness value gradually decreases at the impact angle of 12°, and it remains stable at the impact angle of 90°. At the impact angles of 24°and 60°, the surface roughness first decreases and then increases, and the lateral erosion stripes are observed after the excessive erosion. The subsurface metallurgical structure of eroded sample remains sorbite, which is unchanged, but the surface stress state of the sample has undergone great changes, and erosion with the impact angles of 12°, 24°, 60°leads to residual tensile stress on the surface, while impact at 90°leads to compressive stress.关键词
冲蚀演变规律/冲蚀率/表面形貌/残余应力/离心压缩机叶轮/FV520BKey words
erosion variation law/erosion rate/surface morphology/residual stress/impellers of centrifugal compressor/FV520B分类
通用工业技术引用本文复制引用
王光存,李剑峰,贾秀杰,徐文汗..离心压缩机叶片材料FV520B冲蚀过程演变规律[J].中南大学学报（自然科学版）,2016,47(6):1878-1887,10.基金项目
国家重点基础研究发展规划(973计划)项目(2011CB013401)(Project(2011CB013401) supported by the National Basic Research Development Program (973 Program) of China) （973计划）
