Comparative study of the reactive elements effects on oxidation behavior of a Ni-based superalloy

doi:10.1016/j.vacuum.2021.110382

IMR OpenIR

	Comparative study of the reactive elements effects on oxidation behavior of a Ni-based superalloy
	Rehman, Khalil 1,2; Sheng, Naicheng 1; Sang, Zhiru 1; Xun, Shuling 1; Wang, Zhenjiang 1; Xie, Jun 1; Hou, Guichen 1; Zhou, Yizhou 1; Sun, Xiaofeng 1
通讯作者	Sheng, Naicheng(ncsheng@imr.ac.cn)
	2021-09-01
发表期刊	VACUUM
ISSN	0042-207X
卷号	191 页码:14
摘要	Hf, Y, and Ce (0.1 wt % each) were added in Ni-based superalloy, prepared by vacuum induction melting (VIM), and their effects on oxidation behavior were investigated after 300 h, over the temperature range 900-1100 degrees C. The surface of the oxide layer predominantly consisted of Al2O3 and NiO at 900 degrees C. At 1000 degrees C, most of the surface is covered by Al2O3 along with a small amount of NiAl2O4. However, at 1100 degrees C, the oxide layer's surface mainly formed of NiAl2O4 with plate-like alpha-Al2O3. It has been found that Hf produced excellent oxidation resistance and improved the scale adhesion to the alloy surface. On the other hand, Ce has a limited effect at high temperatures, and the scale adhesion is decreased with increasing oxidation time. From the analysis of oxidation kinetics and microstructure, it has been proposed that the dynamic segregation of reactive elements does not physically leads to the blocking of ions outward diffusion through Al2O3. The improvement in oxidation resistance of alumina forming alloys produced by reactive elements is explained based on ionic radii, chemical reactivity with alloying elements, and alteration in the alumina grain boundary's electronic properties.
关键词	Superalloys High temperature oxidation Reactive elements Microstructure Scale adhesion
资助者	Chinese Academy of Sciences, National Natural Science Foundation of China
DOI	10.1016/j.vacuum.2021.110382
收录类别	SCI
语种	英语
资助项目	Chinese Academy of Sciences, National Natural Science Foundation of China[51701210] ; Chinese Academy of Sciences, National Natural Science Foundation of China[51771191] ; Chinese Academy of Sciences, National Natural Science Foundation of China[51971214]
WOS研究方向	Materials Science ; Physics
WOS类目	Materials Science, Multidisciplinary ; Physics, Applied
WOS记录号	WOS:000681241400003
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：30[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/321006/159554
专题	中国科学院金属研究所
通讯作者	Sheng, Naicheng
作者单位	1.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, 72 Wenhua Rd, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, 96 Jinzhai Rd, Hefei 230026, Peoples R China
推荐引用方式 GB/T 7714	Rehman, Khalil,Sheng, Naicheng,Sang, Zhiru,et al. Comparative study of the reactive elements effects on oxidation behavior of a Ni-based superalloy[J]. VACUUM,2021,191:14.
APA	Rehman, Khalil.,Sheng, Naicheng.,Sang, Zhiru.,Xun, Shuling.,Wang, Zhenjiang.,...&Sun, Xiaofeng.(2021).Comparative study of the reactive elements effects on oxidation behavior of a Ni-based superalloy.VACUUM,191,14.
MLA	Rehman, Khalil,et al."Comparative study of the reactive elements effects on oxidation behavior of a Ni-based superalloy".VACUUM 191(2021):14.