Improved High-Temperature Oxidation Properties for Mn-Containing Beta-Gamma TiAl with W Addition

doi:10.1007/s11085-020-09964-9

IMR OpenIR

	Improved High-Temperature Oxidation Properties for Mn-Containing Beta-Gamma TiAl with W Addition
	Zhao, Pengxiang 1,2; Li, Xiaobing 1,3; Tang, Hongjian 1,2; Ma, Yingche 1,3; Chen, Bo 1,3; Xing, Weiwei 1,3; Liu, Kui 1,3; Yu, Jian 4
通讯作者	Li, Xiaobing(xbli@imr.ac.cn) ; Liu, Kui(kliu@imr.ac.cn)
	2020-03-19
发表期刊	OXIDATION OF METALS
ISSN	0030-770X
页码	16
摘要	TiAl-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.
关键词	Titanium aluminides Cyclic oxidation Manganese Tungsten
资助者	National Natural Science Foundation of China ; National Natural Science Foundation of Liaoning province of China ; China postdoctoral science foundation
DOI	10.1007/s11085-020-09964-9
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51971215] ; National Natural Science Foundation of Liaoning province of China[2019-MS-330] ; China postdoctoral science foundation[2019M661152]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000521009800001
出版者	SPRINGER/PLENUM PUBLISHERS
引用统计	被引频次：25[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/321006/138069
专题	中国科学院金属研究所
通讯作者	Li, Xiaobing; Liu, Kui
作者单位	1.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
推荐引用方式 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,2020:16.
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,16.
MLA	Zhao, Pengxiang,et al."Improved High-Temperature Oxidation Properties for Mn-Containing Beta-Gamma TiAl with W Addition".OXIDATION OF METALS (2020):16.