Ze-Lei Wang, Ye-Bing Hu, Tie-Shan Cao, Cong-Qian Cheng, Jie Zhao
{"title":"关于单晶镍基超级合金树枝状和树枝状间区域非均匀氧化行为的研究","authors":"Ze-Lei Wang, Ye-Bing Hu, Tie-Shan Cao, Cong-Qian Cheng, Jie Zhao","doi":"10.1007/s12034-024-03333-x","DOIUrl":null,"url":null,"abstract":"<div><p>Oxidation behaviour of a third-generation Ni-based single-crystal superalloy was investigated at 900 and 1050°C by scanning electron microscopy, X-ray diffraction and electron probe microanalysis. The alloy showed non-uniform oxidation behaviour in dendritic and interdendritic regions. Re and W were enriched in the dendritic region, leading to the formation of Re<sub>2</sub>O<sub>7</sub> and WO<sub>3</sub>, which were easy to volatile. As a result, the film in the dendritic region was loose and contained number of pores, providing an easy path for the outward diffusion of cations and inward diffusion of O<sup>2−</sup>. Moreover, the high Pilling–Bedworth ratio of Ta<sub>2</sub>O<sub>5</sub> accumulated in the dendrite region, resulting in the occurrence of cracking and cyclic oxidation behaviour. Eventually, the synergistic effect between the loose oxide film and cyclic oxidation leads to more severe oxidation behaviour in dendritic regions of the alloy compared to interdendritic regions.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"47 4","pages":""},"PeriodicalIF":1.9000,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Investigation on non-uniform oxidation behaviour in dendritic and interdendritic regions in a single-crystal Ni-based superalloy\",\"authors\":\"Ze-Lei Wang, Ye-Bing Hu, Tie-Shan Cao, Cong-Qian Cheng, Jie Zhao\",\"doi\":\"10.1007/s12034-024-03333-x\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Oxidation behaviour of a third-generation Ni-based single-crystal superalloy was investigated at 900 and 1050°C by scanning electron microscopy, X-ray diffraction and electron probe microanalysis. The alloy showed non-uniform oxidation behaviour in dendritic and interdendritic regions. Re and W were enriched in the dendritic region, leading to the formation of Re<sub>2</sub>O<sub>7</sub> and WO<sub>3</sub>, which were easy to volatile. As a result, the film in the dendritic region was loose and contained number of pores, providing an easy path for the outward diffusion of cations and inward diffusion of O<sup>2−</sup>. Moreover, the high Pilling–Bedworth ratio of Ta<sub>2</sub>O<sub>5</sub> accumulated in the dendrite region, resulting in the occurrence of cracking and cyclic oxidation behaviour. Eventually, the synergistic effect between the loose oxide film and cyclic oxidation leads to more severe oxidation behaviour in dendritic regions of the alloy compared to interdendritic regions.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>\",\"PeriodicalId\":502,\"journal\":{\"name\":\"Bulletin of Materials Science\",\"volume\":\"47 4\",\"pages\":\"\"},\"PeriodicalIF\":1.9000,\"publicationDate\":\"2024-10-22\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Bulletin of Materials Science\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s12034-024-03333-x\",\"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":"Bulletin of Materials Science","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s12034-024-03333-x","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}
Investigation on non-uniform oxidation behaviour in dendritic and interdendritic regions in a single-crystal Ni-based superalloy
Oxidation behaviour of a third-generation Ni-based single-crystal superalloy was investigated at 900 and 1050°C by scanning electron microscopy, X-ray diffraction and electron probe microanalysis. The alloy showed non-uniform oxidation behaviour in dendritic and interdendritic regions. Re and W were enriched in the dendritic region, leading to the formation of Re2O7 and WO3, which were easy to volatile. As a result, the film in the dendritic region was loose and contained number of pores, providing an easy path for the outward diffusion of cations and inward diffusion of O2−. Moreover, the high Pilling–Bedworth ratio of Ta2O5 accumulated in the dendrite region, resulting in the occurrence of cracking and cyclic oxidation behaviour. Eventually, the synergistic effect between the loose oxide film and cyclic oxidation leads to more severe oxidation behaviour in dendritic regions of the alloy compared to interdendritic regions.
期刊介绍：
The Bulletin of Materials Science is a bi-monthly journal being published by the Indian Academy of Sciences in collaboration with the Materials Research Society of India and the Indian National Science Academy. The journal publishes original research articles, review articles and rapid communications in all areas of materials science. The journal also publishes from time to time important Conference Symposia/ Proceedings which are of interest to materials scientists. It has an International Advisory Editorial Board and an Editorial Committee. The Bulletin accords high importance to the quality of articles published and to keep at a minimum the processing time of papers submitted for publication.
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