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1.太原科技大学 车辆与交通工程学院,太原 030024
2.工程结构性能演化与控制教育部重点实验室(同济大学),上海 200092]
3.中车株洲时代新材料科技股份有限公司,株洲 412007
贺磊,男,1997年生,山西吕梁人,硕士研究生;主要研究方向为汽蚀机制及防护;E-mail:hxk2135@163.com。
收稿日期:2023-12-21,
修回日期:2024-01-17,
纸质出版日期:2025-07-15
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邸娟,贺磊,王程波,等. 百微米阵列凹槽结构下17-4PH叶片钢材料抗汽蚀特性试验研究[J]. 机械强度,2025,47(7):65-72.
DI Juan,HE Lei,WANG Chengbo,et al. Test study on cavitation resistance performance of 17-4PH blade steel material under hunderd-micron array grooves structure[J]. Journal of Mechanical Strength,2025,47(7):65-72.
邸娟,贺磊,王程波,等. 百微米阵列凹槽结构下17-4PH叶片钢材料抗汽蚀特性试验研究[J]. 机械强度,2025,47(7):65-72. DOI: 10.16579/j.issn.1001.9669.2025.07.008.
DI Juan,HE Lei,WANG Chengbo,et al. Test study on cavitation resistance performance of 17-4PH blade steel material under hunderd-micron array grooves structure[J]. Journal of Mechanical Strength,2025,47(7):65-72. DOI: 10.16579/j.issn.1001.9669.2025.07.008.
17-4PH(0Cr17Ni4Cu4Nb)马氏体不锈钢作为过流部件的一种常用材料,易受到严重的汽蚀破坏。借鉴阵列纹理结构的缓蚀作用,聚焦百微米级凹槽阵列表面结构下17-4PH叶片钢材料的汽蚀特性及抑制机制,基于超声波汽蚀试验平台,采用失重法得到试验数据,借助Logistic方程拟合数据点,得到名义潜伏期等参数。结果表明:槽间距
W
和槽宽
L
在百微米区间的表面凹槽靶材,对汽蚀损伤有很好的抑制作用;配比合适的凹槽阵列结构几何参数,可进一步减轻材料汽蚀损伤;槽宽为
L
=700 μm、槽间距为
W
=400 μm的凹槽阵列靶材,经连续汽蚀50 h后,潜伏期最长(22.79 h),质量损失量最小(10.92 mg),因而表现出最佳的抗汽蚀性能,本研究可为工程实际防汽蚀应用提供参考。
As a common material for flow components
17-4PH(0Cr17Ni4Cu4Nb) martensitic stainless steel is vulnerable to serious cavitation damage. Based on the corrosion inhibition effect of array texture structure, this study focused on the cavitation characteristics and inhibition mechanism of 17-4PH material under the surface structure of hundred-micron groove array. Based on the ultrasonic cavitation test platform
the experimental data were obtained by the weight loss method
and the data points were fitted by Logistic equation to obtain the nominal incubation period and other parameters. The results show that the surface groove target with groove spacing
W
and groove width
L
in the range of hundred-micron has a good inhibitory effect on cavitation damage. The geometric parameters of the groove array structure with the appropriate ratio can further reduce the cavitation damage of the material. The groove array target with groove width
L
=700 μm and groove spacing
W
=400 μm has the longest incubation period (22.79 h) and the smallest cumulative mass loss (10.92 mg) after continuous cavitation for 50 h
thereby exhibiting the best cavitation resistance. This study can provide reference for practical engineering applications in preventing cavitation erosion.
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