High Temperature Oxidation Mode and Transformation Mechanism of Quaternary Co-Ni-Cr-Al Alloys

doi:10.11900/0412.1961.2022.00200

IMR OpenIR

	High Temperature Oxidation Mode and Transformation Mechanism of Quaternary Co-Ni-Cr-Al Alloys
	Lv Yunlei 1; Ren Yanjie 1,2; Feng Kangkang 1; Zhou Mengni 1; Wang Wen 3; Chen Jian 1; Niu Yan 1
通讯作者	Ren Yanjie(yjren@csust.edu.cn)
	2024-07-11
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	60 期号:7 页码:947-956
摘要	The addition of Ni to cobalt-based alloys can form the.' phase, which can significantly improve their mechanical properties and high-temperature oxidation resistance. The oxidation behavior of quaternary Co-20Ni-8Cr-xAl (x = 3 or 5, mass fraction, %) alloys was investigated in 1.013 x 10(5) Pa O(2)at 800, 900, 1000, and 1100 degrees C. Also, the effects of Al and/or Cr contents and temperature on the oxidation properties of the alloys were explored by analyzing the oxidation kinetics of the alloys and the crosssectional morphology characteristics of the scales, revealing the oxidation mechanism of these alloys. After oxidation, both the alloys formed complex scales with irregular thickness and composition. Alumina scales were generated for each alloy at 800, 900, and 1000 degrees C and only for Co-20Ni-8Cr-5Al at 1100 degrees C. The increase in temperature from 800oC to 900 degrees C has a negative effect on the oxidation resistance, resulting in greatly accelerated oxidation rates. Conversely, that from 1000 degrees C to 1100 degrees C has a positive effect on the oxidation of the two alloys, causing a decrease in the oxidation rate. The oxidation rate of the Co-NiCr-Al alloy decreases when the Al content in the alloy is increased from 3% to 5%, but 5% is still not sufficient to form continuous alumina scales. The simultaneous presence of Cr and Al is beneficial to reducing the oxidation rate of the quaternary Co-Ni-Cr-Al alloys compared with the ternary Co-Ni-Al alloy with the same Al content.
关键词	Co-Ni-Cr-Al alloy high temperature oxidation oxidation kinetics protective scale
DOI	10.11900/0412.1961.2022.00200
收录类别	SCI
语种	英语
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001260210800009
出版者	SCIENCE PRESS
引用统计	被引频次：1[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/321006/187936
专题	中国科学院金属研究所
通讯作者	Ren Yanjie
作者单位	1.Changsha Univ Sci & Technol, Coll Energy & Power Engn, Changsha 410076, Peoples R China 2.Zhejiang Univ Sci & Technol, Sch Mech & Energy Engn, Hangzhou 310023, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Lv Yunlei,Ren Yanjie,Feng Kangkang,et al. High Temperature Oxidation Mode and Transformation Mechanism of Quaternary Co-Ni-Cr-Al Alloys[J]. ACTA METALLURGICA SINICA,2024,60(7):947-956.
APA	Lv Yunlei.,Ren Yanjie.,Feng Kangkang.,Zhou Mengni.,Wang Wen.,...&Niu Yan.(2024).High Temperature Oxidation Mode and Transformation Mechanism of Quaternary Co-Ni-Cr-Al Alloys.ACTA METALLURGICA SINICA,60(7),947-956.
MLA	Lv Yunlei,et al."High Temperature Oxidation Mode and Transformation Mechanism of Quaternary Co-Ni-Cr-Al Alloys".ACTA METALLURGICA SINICA 60.7(2024):947-956.