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Comparative study of the reactive elements effects on oxidation behavior of a Ni-based superalloy
Rehman, Khalil1,2; Sheng, Naicheng1; Sang, Zhiru1; Xun, Shuling1; Wang, Zhenjiang1; Xie, Jun1; Hou, Guichen1; Zhou, Yizhou1; Sun, Xiaofeng1
Corresponding AuthorSheng, Naicheng(ncsheng@imr.ac.cn)
2021-09-01
Source PublicationVACUUM
ISSN0042-207X
Volume191Pages:14
AbstractHf, Y, and Ce (0.1 wt % each) were added in Ni-based superalloy, prepared by vacuum induction melting (VIM), and their effects on oxidation behavior were investigated after 300 h, over the temperature range 900-1100 degrees C. The surface of the oxide layer predominantly consisted of Al2O3 and NiO at 900 degrees C. At 1000 degrees C, most of the surface is covered by Al2O3 along with a small amount of NiAl2O4. However, at 1100 degrees C, the oxide layer's surface mainly formed of NiAl2O4 with plate-like alpha-Al2O3. It has been found that Hf produced excellent oxidation resistance and improved the scale adhesion to the alloy surface. On the other hand, Ce has a limited effect at high temperatures, and the scale adhesion is decreased with increasing oxidation time. From the analysis of oxidation kinetics and microstructure, it has been proposed that the dynamic segregation of reactive elements does not physically leads to the blocking of ions outward diffusion through Al2O3. The improvement in oxidation resistance of alumina forming alloys produced by reactive elements is explained based on ionic radii, chemical reactivity with alloying elements, and alteration in the alumina grain boundary's electronic properties.
KeywordSuperalloys High temperature oxidation Reactive elements Microstructure Scale adhesion
Funding OrganizationChinese Academy of Sciences, National Natural Science Foundation of China
DOI10.1016/j.vacuum.2021.110382
Indexed BySCI
Languageen
Funding ProjectChinese Academy of Sciences, National Natural Science Foundation of China[51701210] ; Chinese Academy of Sciences, National Natural Science Foundation of China[51771191] ; Chinese Academy of Sciences, National Natural Science Foundation of China[51971214]
WOS Research AreaMaterials Science ; Physics
WOS SubjectMaterials Science, Multidisciplinary ; Physics, Applied
WOS IDWOS:000681241400003
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/159554
Collection中国科学院金属研究所
Corresponding AuthorSheng, Naicheng
Affiliation1.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, 72 Wenhua Rd, Shenyang 110016, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, 96 Jinzhai Rd, Hefei 230026, Peoples R China
Recommended Citation
GB/T 7714
Rehman, Khalil,Sheng, Naicheng,Sang, Zhiru,et al. Comparative study of the reactive elements effects on oxidation behavior of a Ni-based superalloy[J]. VACUUM,2021,191:14.
APA Rehman, Khalil.,Sheng, Naicheng.,Sang, Zhiru.,Xun, Shuling.,Wang, Zhenjiang.,...&Sun, Xiaofeng.(2021).Comparative study of the reactive elements effects on oxidation behavior of a Ni-based superalloy.VACUUM,191,14.
MLA Rehman, Khalil,et al."Comparative study of the reactive elements effects on oxidation behavior of a Ni-based superalloy".VACUUM 191(2021):14.
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