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Improved High-Temperature Oxidation Properties for Mn-Containing Beta-Gamma TiAl with W Addition
Zhao, Pengxiang1,2; Li, Xiaobing1,3; Tang, Hongjian1,2; Ma, Yingche1,3; Chen, Bo1,3; Xing, Weiwei1,3; Liu, Kui1,3; Yu, Jian4
Corresponding AuthorLi, Xiaobing(xbli@imr.ac.cn) ; Liu, Kui(kliu@imr.ac.cn)
2020-03-19
Source PublicationOXIDATION OF METALS
ISSN0030-770X
Volume93Issue:2021-05-06Pages:16
AbstractTiAl-based alloys containing relatively high Mn (e.g., Ti-42Al-5Mn (in at.%)) possess excellent hot workability and cost-effective advantages, but may also have poor oxidation resistance at high temperature. Hence, additional attention needs to be paid on the oxidation resistance of these alloys. In this study, a Mn-containing gamma-TiAl-based alloy with the composition of Ti-42Al-5Mn has been chosen, and the oxidation behavior of this alloy with different W additions under thermal cycling conditions at 800 degrees C was investigated. The morphology and the composition distribution of the oxide scale were analyzed by means of scanning electron microscopy equipped with energy-dispersive spectroscopy, X-ray diffractometry and X-ray photoelectron spectroscopy. Auger electron spectroscopy depth profiling was used to investigate the effect of W on the initial stage of oxidation. It shows that the addition of 1 (at.%) W can significantly reduce the oxidation mass gain, and the oxidation reaction rate constant is decreased by an order of magnitude. The adherence of oxide scale is greatly enhanced with no spallation observed in Ti-42Al-5Mn-(0.8, 1)W after 100-h cyclic oxidation. Tungsten promotes the selective oxidation of Al and formation of a denser oxide scale which prevents the inward diffusion of oxygen; in this way, high-temperature oxidation resistance of the alloy is improved.
KeywordTitanium aluminides Cyclic oxidation Manganese Tungsten
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of Liaoning province of China ; China postdoctoral science foundation
DOI10.1007/s11085-020-09964-9
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[51971215] ; National Natural Science Foundation of Liaoning province of China[2019-MS-330] ; China postdoctoral science foundation[2019M661152]
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000521009800001
PublisherSPRINGER/PLENUM PUBLISHERS
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/138068
Collection中国科学院金属研究所
Corresponding AuthorLi, Xiaobing; Liu, Kui
Affiliation1.Chinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China
3.IMR NMSA, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110014, Peoples R China
4.Weichai Power Co Ltd, Weichai 261061, Peoples R China
Recommended Citation
GB/T 7714
Zhao, Pengxiang,Li, Xiaobing,Tang, Hongjian,et al. Improved High-Temperature Oxidation Properties for Mn-Containing Beta-Gamma TiAl with W Addition[J]. OXIDATION OF METALS,2020,93(2021-05-06):16.
APA Zhao, Pengxiang.,Li, Xiaobing.,Tang, Hongjian.,Ma, Yingche.,Chen, Bo.,...&Yu, Jian.(2020).Improved High-Temperature Oxidation Properties for Mn-Containing Beta-Gamma TiAl with W Addition.OXIDATION OF METALS,93(2021-05-06),16.
MLA Zhao, Pengxiang,et al."Improved High-Temperature Oxidation Properties for Mn-Containing Beta-Gamma TiAl with W Addition".OXIDATION OF METALS 93.2021-05-06(2020):16.
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