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Influence of Trace Y and Hf on the High-Temperature Oxidation Resistance of TiAl Based Alloys with High Nb Content
Alternative TitleInfluence of Trace Y and Hf on the High-Temperature Oxidation Resistance of TiAl Based Alloys with High Nb Content
Wang Yanjing; Song Meijin; Wang Jijie; Du Xinghao
2014
Source PublicationRARE METAL MATERIALS AND ENGINEERING
ISSN1002-185X
Volume43Issue:7Pages:1697-1701
AbstractThe interrupted oxidation behavior of Hf and Y micro-alloyed TiAl-based alloys with high Nb content at 900 degrees C in static air was investigated. The results show that the addition of 0.5%Hf (mol%, similarly hereinafter) has few effects on the oxidation resistance of the high-Nb alloy, the addition of 0.1%Y improves the oxidation resistance, while the combined addition of 0.1%Y and 0.5% Hf enhances the adherence of oxide scale but reduces the oxidation resistance. Oxidized samples were examined by scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDX) and X-ray diffraction analysis (XRD). It is found that the addition of 0.1%Y and the combined addition of 0.5%Hf and 0.1%Y promote the formation of continuous and compact Al2O3 oxide scale. The combined addition of 0.5%Hf and 0.1%Y into the high-Nb alloy results in the partial internal oxidation of the alloy, impairing the oxidation resistance of TiAl.
KeywordBEHAVIOR ZR TiAl intermetallic compound high temperature oxidation Hf Y microalloying
Indexed ByCSCD
Language英语
CSCD IDCSCD:5200325
Citation statistics
Cited Times:4[CSCD]   [CSCD Record]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/146529
Collection中国科学院金属研究所
Affiliation中国科学院金属研究所
Recommended Citation
GB/T 7714
Wang Yanjing,Song Meijin,Wang Jijie,et al. Influence of Trace Y and Hf on the High-Temperature Oxidation Resistance of TiAl Based Alloys with High Nb Content[J]. RARE METAL MATERIALS AND ENGINEERING,2014,43(7):1697-1701.
APA Wang Yanjing,Song Meijin,Wang Jijie,&Du Xinghao.(2014).Influence of Trace Y and Hf on the High-Temperature Oxidation Resistance of TiAl Based Alloys with High Nb Content.RARE METAL MATERIALS AND ENGINEERING,43(7),1697-1701.
MLA Wang Yanjing,et al."Influence of Trace Y and Hf on the High-Temperature Oxidation Resistance of TiAl Based Alloys with High Nb Content".RARE METAL MATERIALS AND ENGINEERING 43.7(2014):1697-1701.
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