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Oxidation behavior of a cast polycrystalline Ni-base superalloy in air: At 900 and 1000 degrees C
Wei, H.; Hou, G. C.; Sun, X. F.; Guan, H. R.; Hu, Z. Q.
Corresponding AuthorWei, H.(hwei@imr.ac.cn)
2007-10-01
Source PublicationOXIDATION OF METALS
ISSN0030-770X
Volume68Issue:3-4Pages:149-163
AbstractThe oxidation behavior of a cast polycrystalline Ni-base superalloy was studied at 900 and 1000 degrees C and analyzed by thermogravimetric analysis (TGA), X-ray diffraction (XRD) and SEM. The results indicate that the cast Ni-base superalloy exhibits subparabolic oxidation kinetics, which are controlled by the growth of the inner Al-rich layer. A mixed scale forms on the alloy after prolonged oxidation. The oxide scale formed on the gamma matrix is composed of an outer layer of spinel and a uniform inner, compact Al-rich layer. The oxidation behavior on the region overlying MC carbide precipitates is slightly different from that in the gamma matrix. The difference is explained by the big difference in composition between MC carbide and gamma matrix.
Keywordcast polycrystalline Ni-base superalloy oxidation kinetics microstructure
DOI10.1007/s11085-007-9066-x
Indexed BySCI
Language英语
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000249269800003
PublisherSPRINGER/PLENUM PUBLISHERS
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/91987
Collection中国科学院金属研究所
Corresponding AuthorWei, H.
AffiliationChinese Acad Sci, Met Res Inst, Superalloy Div, Shenyang, Peoples R China
Recommended Citation
GB/T 7714
Wei, H.,Hou, G. C.,Sun, X. F.,et al. Oxidation behavior of a cast polycrystalline Ni-base superalloy in air: At 900 and 1000 degrees C[J]. OXIDATION OF METALS,2007,68(3-4):149-163.
APA Wei, H.,Hou, G. C.,Sun, X. F.,Guan, H. R.,&Hu, Z. Q..(2007).Oxidation behavior of a cast polycrystalline Ni-base superalloy in air: At 900 and 1000 degrees C.OXIDATION OF METALS,68(3-4),149-163.
MLA Wei, H.,et al."Oxidation behavior of a cast polycrystalline Ni-base superalloy in air: At 900 and 1000 degrees C".OXIDATION OF METALS 68.3-4(2007):149-163.
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