Isothermal oxidation behavior of Ti3Al-based alloy at 700-1000 degrees C in air

doi:10.1016/S1003-6326(08)60306-4

IMR OpenIR

	Isothermal oxidation behavior of Ti3Al-based alloy at 700-1000 degrees C in air
	Qian Yu-hai 1,2; Li Mei-shuan 2; Lu Bin 2
通讯作者	Qian Yu-hai(yhqian@baosteel.com)
	2009-06-01
发表期刊	TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
ISSN	1003-6326
卷号	19 期号:3 页码:525-529
摘要	The 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.
关键词	oxidation resistance Ti3Al-based intermetallic alloy oxidation kinetics
资助者	National Natural Science Foundation of China
DOI	10.1016/S1003-6326(08)60306-4
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[50771099]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000266892200003
出版者	ELSEVIER SCIENCE BV
引用统计	被引频次：9[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/96418
专题	中国科学院金属研究所
通讯作者	Qian Yu-hai
作者单位	1.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
推荐引用方式 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.