The oxidation behavior of Ti-46.5Al-5Nb at 900 degrees C

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	The oxidation behavior of Ti-46.5Al-5Nb at 900 degrees C
	W. Lu; C. L. Chen; Y. J. Xi; F. H. Wang; L. L. He
	2007
发表期刊	Intermetallics
ISSN	0966-9795
卷号	15 期号:8 页码:989-998
摘要	The early stages of Ti-46.5Al-5Nb (at%) oxidation at 900 degrees C have been investigated combined with TEM and STEM. The results reveal that a layer composed of polycrystalline TiO2 and amorphous Al2O3 phase formed firstly after 5-min oxidation. The base alloy connected with the oxide scale has some deformation compared with the inner full lamellar TiAl structure. After 30-min oxidation, the phases of gamma-Al2O3, kappa-Al2O3, titanium nitrides and Ti5Al3O2 were formed in the area from the nitride layer to base alloy. After 50 h of oxidation, Ti5Al3O2 vanishes at the interface of oxide scale/base alloy in Ti-46.5Al-5Nb, contrary to the continuous formation of Ti5Al3O2 in gamma-TiAl at the interface of oxide scale[base alloy, Al3Nb phase formed in this zone, which hinders the continuous formation of Ti5Al3O2. (C)2007 Elsevier Ltd. All rights reserved.
部门归属	chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. chinese acad sci, grad sch, beijing 100039, peoples r china. zhongyuan inst technol, dept mat & chem engn, zhongyuan, peoples r china. chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china.;he, ll (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china;llhe@imr.ac.cn
关键词	Titanium Aluminides Based On Tial Oxidation Electron Microscopy Transmission Gamma-titanium Aluminides High-temperature Air Intermetallic Alloys Ternary-system Tial Alloys Tem Phase Microstructure Kappa-al2o3 Diffraction
URL	查看原文
WOS记录号	WOS:000248065300001
引用统计	被引频次：34[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/321006/33743
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	W. Lu,C. L. Chen,Y. J. Xi,et al. The oxidation behavior of Ti-46.5Al-5Nb at 900 degrees C[J]. Intermetallics,2007,15(8):989-998.
APA	W. Lu,C. L. Chen,Y. J. Xi,F. H. Wang,&L. L. He.(2007).The oxidation behavior of Ti-46.5Al-5Nb at 900 degrees C.Intermetallics,15(8),989-998.
MLA	W. Lu,et al."The oxidation behavior of Ti-46.5Al-5Nb at 900 degrees C".Intermetallics 15.8(2007):989-998.