Pengju Fan , Xiufang Cui , Jian Li , Hao Wu , Liang Li , Chunlei Teng , Jinna Liu , Guo Jin
{"title":"QPQ耦合超声轧制后处理工艺强化机理研究","authors":"Pengju Fan , Xiufang Cui , Jian Li , Hao Wu , Liang Li , Chunlei Teng , Jinna Liu , Guo Jin","doi":"10.1016/j.surfcoat.2025.132690","DOIUrl":null,"url":null,"abstract":"<div><div>This study investigated the effects of ultrasonic surface rolling processing (USRP) on quench–polish–quench (QPQ)-nitrided 32Cr3MoVE steel. USRP was employed to eliminate the porous structure of the QPQ-nitrided layer and enhance the overall material performance. The results indicate that USRP eliminated defects such as pores in the QPQ-nitrided layer and reduced grain size. Furthermore, USRP not only increased the proportion of low-angle grain boundaries but also introduced a residual stress field with a depth of 250 μm at the surface of the sample owing to its work-hardening effect. As a result, USRP improved the surface hardness of the nitrided layer by approximately 22 % and reduced the wear rate by up to 64 %. The effects of USRP on the material—elimination of the loose interlayer structure and introduction of compressive stress—changed the corrosion mechanism of the material, enhancing its corrosion resistance. Additionally, the strengthening effect of USRP increased with increasing applied static pressure.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"516 ","pages":"Article 132690"},"PeriodicalIF":6.1000,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Research on the strengthening mechanism of QPQ coupled ultrasonic rolling post-treatment process\",\"authors\":\"Pengju Fan , Xiufang Cui , Jian Li , Hao Wu , Liang Li , Chunlei Teng , Jinna Liu , Guo Jin\",\"doi\":\"10.1016/j.surfcoat.2025.132690\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>This study investigated the effects of ultrasonic surface rolling processing (USRP) on quench–polish–quench (QPQ)-nitrided 32Cr3MoVE steel. USRP was employed to eliminate the porous structure of the QPQ-nitrided layer and enhance the overall material performance. The results indicate that USRP eliminated defects such as pores in the QPQ-nitrided layer and reduced grain size. Furthermore, USRP not only increased the proportion of low-angle grain boundaries but also introduced a residual stress field with a depth of 250 μm at the surface of the sample owing to its work-hardening effect. As a result, USRP improved the surface hardness of the nitrided layer by approximately 22 % and reduced the wear rate by up to 64 %. The effects of USRP on the material—elimination of the loose interlayer structure and introduction of compressive stress—changed the corrosion mechanism of the material, enhancing its corrosion resistance. Additionally, the strengthening effect of USRP increased with increasing applied static pressure.</div></div>\",\"PeriodicalId\":22009,\"journal\":{\"name\":\"Surface & Coatings Technology\",\"volume\":\"516 \",\"pages\":\"Article 132690\"},\"PeriodicalIF\":6.1000,\"publicationDate\":\"2025-09-17\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Surface & Coatings Technology\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0257897225009648\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MATERIALS SCIENCE, COATINGS & FILMS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Surface & Coatings Technology","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0257897225009648","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, COATINGS & FILMS","Score":null,"Total":0}
Research on the strengthening mechanism of QPQ coupled ultrasonic rolling post-treatment process
This study investigated the effects of ultrasonic surface rolling processing (USRP) on quench–polish–quench (QPQ)-nitrided 32Cr3MoVE steel. USRP was employed to eliminate the porous structure of the QPQ-nitrided layer and enhance the overall material performance. The results indicate that USRP eliminated defects such as pores in the QPQ-nitrided layer and reduced grain size. Furthermore, USRP not only increased the proportion of low-angle grain boundaries but also introduced a residual stress field with a depth of 250 μm at the surface of the sample owing to its work-hardening effect. As a result, USRP improved the surface hardness of the nitrided layer by approximately 22 % and reduced the wear rate by up to 64 %. The effects of USRP on the material—elimination of the loose interlayer structure and introduction of compressive stress—changed the corrosion mechanism of the material, enhancing its corrosion resistance. Additionally, the strengthening effect of USRP increased with increasing applied static pressure.
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.