Hybrid cavitation erosion resistance mechanisms of 42CrMo modified by ultrasonic surface rolling process

IF 6.1 2区材料科学 Q1 MATERIALS SCIENCE, COATINGS & FILMS

Surface & Coatings Technology Pub Date : 2025-09-18 DOI:10.1016/j.surfcoat.2025.132705

Jianxiong Wu , Yilei Zhao , Hongbin Lin , Xuelei Fu , Shuangjia Liu , Yiman Duan , Yu Fang , Junhui Zhang , Bing Xu , Chao Zhang

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引用次数: 0

Abstract

Ultrasonic surface rolling process (USRP) can effectively improve the surface quality, contributing to the cavitation erosion resistance capability of the metal surface. However, there is a lack of detailed mechanisms about the synergistic effects of surface morphology and microstructure on the cavitation erosion resistance of metals. This study reveals the hybrid cavitation erosion resistance mechanisms of 42CrMo modified by USRP, including surface degradation-induced corrosion erosion acceleration mechanism and grain refinement-induced corrosion erosion resistance mechanism. The details are as follows: the increase of rolling plastic deformation causes obvious grain refinement and surface defect removal, resulting in the improvement of cavitation erosion resistance performance. As the rolling plastic deformation exceeds a certain degree, the effect of grain refinement weakens and surface rolling fatigue defects are generated, causing a sharp decline in the cavitation corrosion resistance. This study offers a compressive understanding of hybrid cavitation erosion resistance mechanisms of 42CrMo modified by USRP.

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超声表面轧制改性42CrMo复合抗空化蚀机理

超声波表面轧制工艺（USRP）可以有效地改善表面质量，有助于提高金属表面的抗空化侵蚀能力。然而，关于表面形貌和微观结构对金属抗空蚀性协同作用的详细机制尚不清楚。本研究揭示了USRP改性42CrMo复合抗蚀机理，包括表面降解诱导的腐蚀侵蚀加速机理和晶粒细化诱导的腐蚀侵蚀机理。具体如下：轧制塑性变形的增加使晶粒细化和表面缺陷消除明显，从而提高了抗空化侵蚀性能。当轧制塑性变形超过一定程度时，晶粒细化效果减弱，产生表面轧制疲劳缺陷，导致抗空化腐蚀能力急剧下降。本研究对USRP改性42CrMo的抗杂化空化侵蚀机理提供了一个压缩的认识。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Surface & Coatings Technology 工程技术-材料科学：膜

CiteScore

10.00

自引率

11.10%

发文量

921

审稿时长

19 days

期刊介绍： Surface and Coatings Technology is an international archival journal publishing scientific papers on significant developments in surface and interface engineering to modify and improve the surface properties of materials for protection in demanding contact conditions or aggressive environments, or for enhanced functional performance. Contributions range from original scientific articles concerned with fundamental and applied aspects of research or direct applications of metallic, inorganic, organic and composite coatings, to invited reviews of current technology in specific areas. Papers submitted to this journal are expected to be in line with the following aspects in processes, and properties/performance: A. Processes: Physical and chemical vapour deposition techniques, thermal and plasma spraying, surface modification by directed energy techniques such as ion, electron and laser beams, thermo-chemical treatment, wet chemical and electrochemical processes such as plating, sol-gel coating, anodization, plasma electrolytic oxidation, etc., but excluding painting. B. Properties/performance: friction performance, wear resistance (e.g., abrasion, erosion, fretting, etc), corrosion and oxidation resistance, thermal protection, diffusion resistance, hydrophilicity/hydrophobicity, and properties relevant to smart materials behaviour and enhanced multifunctional performance for environmental, energy and medical applications, but excluding device aspects.