Wangwang Ding , Busheng Zhang , Jiajun Wu , Xiaodie Cao , Yan Chen , Haoran Gu , Dongxing Zhang , Qiuquan Guo , Yong Sun , Jun Yang
{"title":"激光冲击强化镍基单晶高温合金的高温抗氧化性能","authors":"Wangwang Ding , Busheng Zhang , Jiajun Wu , Xiaodie Cao , Yan Chen , Haoran Gu , Dongxing Zhang , Qiuquan Guo , Yong Sun , Jun Yang","doi":"10.1016/j.jmrt.2025.09.145","DOIUrl":null,"url":null,"abstract":"<div><div>The fourth generation of Ni-based single crystal superalloys (Ni-SXs), such as DD91, play a crucial role in aerospace and gas turbines due to their excellent performance at high temperature. To enhance the oxidation resistance and high-temperature performance of Ni-SXs, the laser shock peening (LSP) treatment was employed to introduce the dislocations in their surface, which act as diffusion channels for metal atoms and promote the formation of dense protective oxide layer during oxidation. In this study, XRD, XPS, SEM and TEM analyses were conducted on the cross-section of Ni-SXs to compare the microstructure and oxidation behavior before and after the LSP treatment. The results indicate that surface engineering via the LSP treatment significantly alters the dislocations status of γ/γ՛ phases, consequently influencing the surface oxide layer and oxidation resistance of Ni-SXs. Additionally, the oxidation mechanism of Ni-SXs after the LSP treatment was studied. The understanding developed in this work could be beneficial for the design of the alloys with enhanced oxidation resistance.</div></div>","PeriodicalId":54332,"journal":{"name":"Journal of Materials Research and Technology-Jmr&t","volume":"39 ","pages":""},"PeriodicalIF":6.6000,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Enhanced high-temperature oxidation resistance of Ni-based single crystal superalloys by laser shock peening\",\"authors\":\"Wangwang Ding , Busheng Zhang , Jiajun Wu , Xiaodie Cao , Yan Chen , Haoran Gu , Dongxing Zhang , Qiuquan Guo , Yong Sun , Jun Yang\",\"doi\":\"10.1016/j.jmrt.2025.09.145\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>The fourth generation of Ni-based single crystal superalloys (Ni-SXs), such as DD91, play a crucial role in aerospace and gas turbines due to their excellent performance at high temperature. To enhance the oxidation resistance and high-temperature performance of Ni-SXs, the laser shock peening (LSP) treatment was employed to introduce the dislocations in their surface, which act as diffusion channels for metal atoms and promote the formation of dense protective oxide layer during oxidation. In this study, XRD, XPS, SEM and TEM analyses were conducted on the cross-section of Ni-SXs to compare the microstructure and oxidation behavior before and after the LSP treatment. The results indicate that surface engineering via the LSP treatment significantly alters the dislocations status of γ/γ՛ phases, consequently influencing the surface oxide layer and oxidation resistance of Ni-SXs. Additionally, the oxidation mechanism of Ni-SXs after the LSP treatment was studied. The understanding developed in this work could be beneficial for the design of the alloys with enhanced oxidation resistance.</div></div>\",\"PeriodicalId\":54332,\"journal\":{\"name\":\"Journal of Materials Research and Technology-Jmr&t\",\"volume\":\"39 \",\"pages\":\"\"},\"PeriodicalIF\":6.6000,\"publicationDate\":\"2025-09-17\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Materials Research and Technology-Jmr&t\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2238785425023993\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Materials Research and Technology-Jmr&t","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2238785425023993","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Enhanced high-temperature oxidation resistance of Ni-based single crystal superalloys by laser shock peening
The fourth generation of Ni-based single crystal superalloys (Ni-SXs), such as DD91, play a crucial role in aerospace and gas turbines due to their excellent performance at high temperature. To enhance the oxidation resistance and high-temperature performance of Ni-SXs, the laser shock peening (LSP) treatment was employed to introduce the dislocations in their surface, which act as diffusion channels for metal atoms and promote the formation of dense protective oxide layer during oxidation. In this study, XRD, XPS, SEM and TEM analyses were conducted on the cross-section of Ni-SXs to compare the microstructure and oxidation behavior before and after the LSP treatment. The results indicate that surface engineering via the LSP treatment significantly alters the dislocations status of γ/γ՛ phases, consequently influencing the surface oxide layer and oxidation resistance of Ni-SXs. Additionally, the oxidation mechanism of Ni-SXs after the LSP treatment was studied. The understanding developed in this work could be beneficial for the design of the alloys with enhanced oxidation resistance.
期刊介绍:
The Journal of Materials Research and Technology is a publication of ABM - Brazilian Metallurgical, Materials and Mining Association - and publishes four issues per year also with a free version online (www.jmrt.com.br). The journal provides an international medium for the publication of theoretical and experimental studies related to Metallurgy, Materials and Minerals research and technology. Appropriate submissions to the Journal of Materials Research and Technology should include scientific and/or engineering factors which affect processes and products in the Metallurgy, Materials and Mining areas.