L. Li, W. Zhang, G.Q. Jiang, X.K. Meng, H.M. Zhang, P.F. Li, S. Huang, J.Z. Zhou
{"title":"超声波表面滚压工艺对激光粉末床熔融法加工的 2195 Al-Li 合金微观结构和耐磨性的影响","authors":"L. Li, W. Zhang, G.Q. Jiang, X.K. Meng, H.M. Zhang, P.F. Li, S. Huang, J.Z. Zhou","doi":"10.1016/j.matlet.2024.137732","DOIUrl":null,"url":null,"abstract":"<div><div>This study presents a comparative analysis of the impacts of surface rolling (SR) and ultrasonic surface rolling (USR) techniques on the microstructure and wear resistance of 2195 Al-Li alloy processed by laser powder bed fusion (LPBF). The results show that both SR and USR processes induced grain refinement, increased dislocation density, and converted tensile residual stress into compressive residual stress in the surface layer of the original samples. Compared to the SR process, the USR process exhibited more pronounced strengthening effects due to its unique acoustic effect and dynamic recrystallization mechanism. With the application of USR, the average coefficient of friction for the sample reduced from 0.41 to 0.32. This enhancement in wear resistance can be attributed to the synergistic effects of grain boundary strengthening, dislocation strengthening, and stress strengthening mechanisms.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"379 ","pages":"Article 137732"},"PeriodicalIF":2.7000,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Effects of ultrasonic surface rolling process on the microstructure and wear resistance of 2195 Al-Li alloy processed by laser powder bed fusion\",\"authors\":\"L. Li, W. Zhang, G.Q. Jiang, X.K. Meng, H.M. Zhang, P.F. Li, S. Huang, J.Z. Zhou\",\"doi\":\"10.1016/j.matlet.2024.137732\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>This study presents a comparative analysis of the impacts of surface rolling (SR) and ultrasonic surface rolling (USR) techniques on the microstructure and wear resistance of 2195 Al-Li alloy processed by laser powder bed fusion (LPBF). The results show that both SR and USR processes induced grain refinement, increased dislocation density, and converted tensile residual stress into compressive residual stress in the surface layer of the original samples. Compared to the SR process, the USR process exhibited more pronounced strengthening effects due to its unique acoustic effect and dynamic recrystallization mechanism. With the application of USR, the average coefficient of friction for the sample reduced from 0.41 to 0.32. This enhancement in wear resistance can be attributed to the synergistic effects of grain boundary strengthening, dislocation strengthening, and stress strengthening mechanisms.</div></div>\",\"PeriodicalId\":384,\"journal\":{\"name\":\"Materials Letters\",\"volume\":\"379 \",\"pages\":\"Article 137732\"},\"PeriodicalIF\":2.7000,\"publicationDate\":\"2024-11-15\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Materials Letters\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0167577X2401872X\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials Letters","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0167577X2401872X","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Effects of ultrasonic surface rolling process on the microstructure and wear resistance of 2195 Al-Li alloy processed by laser powder bed fusion
This study presents a comparative analysis of the impacts of surface rolling (SR) and ultrasonic surface rolling (USR) techniques on the microstructure and wear resistance of 2195 Al-Li alloy processed by laser powder bed fusion (LPBF). The results show that both SR and USR processes induced grain refinement, increased dislocation density, and converted tensile residual stress into compressive residual stress in the surface layer of the original samples. Compared to the SR process, the USR process exhibited more pronounced strengthening effects due to its unique acoustic effect and dynamic recrystallization mechanism. With the application of USR, the average coefficient of friction for the sample reduced from 0.41 to 0.32. This enhancement in wear resistance can be attributed to the synergistic effects of grain boundary strengthening, dislocation strengthening, and stress strengthening mechanisms.
期刊介绍：
Materials Letters has an open access mirror journal Materials Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review.
Materials Letters is dedicated to publishing novel, cutting edge reports of broad interest to the materials community. The journal provides a forum for materials scientists and engineers, physicists, and chemists to rapidly communicate on the most important topics in the field of materials.
Contributions include, but are not limited to, a variety of topics such as:
• Materials - Metals and alloys, amorphous solids, ceramics, composites, polymers, semiconductors
• Applications - Structural, opto-electronic, magnetic, medical, MEMS, sensors, smart
• Characterization - Analytical, microscopy, scanning probes, nanoscopic, optical, electrical, magnetic, acoustic, spectroscopic, diffraction
• Novel Materials - Micro and nanostructures (nanowires, nanotubes, nanoparticles), nanocomposites, thin films, superlattices, quantum dots.
• Processing - Crystal growth, thin film processing, sol-gel processing, mechanical processing, assembly, nanocrystalline processing.
• Properties - Mechanical, magnetic, optical, electrical, ferroelectric, thermal, interfacial, transport, thermodynamic
• Synthesis - Quenching, solid state, solidification, solution synthesis, vapor deposition, high pressure, explosive
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
