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Isothermal oxidation behavior of Ti3Al-based alloy at 700-1000 degrees C in air
Qian Yu-hai1,2; Li Mei-shuan2; Lu Bin2
Corresponding AuthorQian Yu-hai(yhqian@baosteel.com)
2009-06-01
Source PublicationTRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
ISSN1003-6326
Volume19Issue:3Pages:525-529
AbstractThe isothermal oxidation behavior of a Ti3Al-based alloy (Ti-24Al-14Nb-3V-0.5Mo-0.3Si, molar fraction, %) at 700-1000 degrees C in air was investigated. The oxidation kinetics of tested alloy approximately obeys the parabolic law, which shows that the oxidation process is dominated by the diffusion of ions. The oxidation diffusion activity energy is 241.32 kJ/mol. The tested alloy exhibits good oxidation resistance at 700 degrees C. However, when the temperature is higher than 900 degrees C, the oxidation resistance becomes poor. The XRD results reveal that the oxide product consists of a mixture of TiO2 and Al2O3. Serious crack and spallation of oxide scale occur during cooling procedure after being exposed at 1000 degrees C in air for 16 h. According to the analysis of SEM/EDS and XRD, it is concluded that the Al2O3 oxide forms at the initially transient oxidation stage and most of it keeps in the outer oxide layer during the subsequent oxidation procedure.
Keywordoxidation resistance Ti3Al-based intermetallic alloy oxidation kinetics
Funding OrganizationNational Natural Science Foundation of China
DOI10.1016/S1003-6326(08)60306-4
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[50771099]
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000266892200003
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/96418
Collection中国科学院金属研究所
Corresponding AuthorQian Yu-hai
Affiliation1.Baoshan Iron & Steel Co Ltd, R&D Ctr, Shanghai 201900, Peoples R China
2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Qian Yu-hai,Li Mei-shuan,Lu Bin. Isothermal oxidation behavior of Ti3Al-based alloy at 700-1000 degrees C in air[J]. TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,2009,19(3):525-529.
APA Qian Yu-hai,Li Mei-shuan,&Lu Bin.(2009).Isothermal oxidation behavior of Ti3Al-based alloy at 700-1000 degrees C in air.TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,19(3),525-529.
MLA Qian Yu-hai,et al."Isothermal oxidation behavior of Ti3Al-based alloy at 700-1000 degrees C in air".TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA 19.3(2009):525-529.
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