Improved Spallation Resistance of the Oxide Scale by Hf/Y Co-doping in Ni-Based Superalloy at High Temperature

doi:10.1007/s40195-022-01407-5

IMR OpenIR

	Improved Spallation Resistance of the Oxide Scale by Hf/Y Co-doping in Ni-Based Superalloy at High Temperature
	Rehman, Khalil 1,2; Sheng, Naicheng 1; Fan, Shigang 1; Sun, Shijie 1; Hou, Guicheng 1; Zhou, Yizhou 1; Sun, Xiaofeng 1
通讯作者	Sheng, Naicheng(ncsheng@imr.ac.cn)
	2022-04-08
发表期刊	ACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN	1006-7191
页码	15
摘要	Ni-based superalloys added with comparably higher concentrations of single-doped Hf and co-doped Hf/Y are prepared by vacuum induction melting (VIM). The oxidation properties up to 300 h at 900 degrees C, 1000 degrees C, and 1100 degrees C are investigated. The undoped alloy exhibited a minimum oxidation rate at 900 degrees C and 1000 degrees C. The co-doped alloy showed a higher oxidation rate; however, it possesses better scale adhesion, and no spallation occurs. Hf-doped alloy showed a lower oxidation rate and better scale adhesion at 900 degrees C and 1000 degrees C, but exhibited a shorter lifetime at 1100 degrees C. The spallation of the Hf-doped alloy is attributed to the precipitation of the HfO2 in and beneath the oxide scale. The spallation in the undoped alloy is accredited to the thermal expansion mismatch between the growing oxide scale and superalloy substrate. Incorporating two reactive elements (REs) in alloy minimized the precipitation of RE oxide in the oxide scale, diminished internal oxidation in the alloy, and decreased oxide scale spallation.
关键词	Superalloys Reactive elements Oxidation kinetics Microstructure Spallation resistance
资助者	National Natural Science Foundation of China
DOI	10.1007/s40195-022-01407-5
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51971214]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000781275200001
出版者	CHINESE ACAD SCIENCES, INST METAL RESEARCH
引用统计	被引频次：7[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/321006/172973
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, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China
推荐引用方式 GB/T 7714	Rehman, Khalil,Sheng, Naicheng,Fan, Shigang,et al. Improved Spallation Resistance of the Oxide Scale by Hf/Y Co-doping in Ni-Based Superalloy at High Temperature[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2022:15.
APA	Rehman, Khalil.,Sheng, Naicheng.,Fan, Shigang.,Sun, Shijie.,Hou, Guicheng.,...&Sun, Xiaofeng.(2022).Improved Spallation Resistance of the Oxide Scale by Hf/Y Co-doping in Ni-Based Superalloy at High Temperature.ACTA METALLURGICA SINICA-ENGLISH LETTERS,15.
MLA	Rehman, Khalil,et al."Improved Spallation Resistance of the Oxide Scale by Hf/Y Co-doping in Ni-Based Superalloy at High Temperature".ACTA METALLURGICA SINICA-ENGLISH LETTERS (2022):15.