<p>Effect of heat treatment on rotating bending fatigue properties of K417G nickel-base superalloy</p>

doi:10.1016/j.jallcom.2022.164209

CORC > 金属研究所 > 中国科学院金属研究所

	Effect of heat treatment on rotating bending fatigue properties of K417G nickel-base superalloy
	Yu, Xingfu 2; Wang, Shijie 3; Zheng, Dongyue 3; Shen, Xiangyang 3; Li, Yanbin 2; Liu, Weijun 2; Su, Yong 1; Liu, Fang 4
刊名	JOURNAL OF ALLOYS AND COMPOUNDS
	2022-06-05
卷号	905 页码:7
关键词	K417G superalloy Heat treatment Rotating bending fatigue Carbide Grain boundary
ISSN号	0925-8388
DOI	10.1016/j.jallcom.2022.164209
通讯作者	Yu, Xingfu(yuxingfu@163.com)
英文摘要	By observing the microstructure, testing the rotating bending fatigue property and analyzing the microscopic deformation characteristics, the effects of heat treatment on grain boundary carbides and rotating bending fatigue property of the K417G nickel-based superalloy were studied. The results show that the rotating bending fatigue property of the alloy is improved by adjusting the precipitation characteristics of grain boundary carbides through the appropriate heat treatment. After aging at different temperatures (850 ?, 900 ?& nbsp;and 950 ?) for 16 h, the previous Zr-rich carboborides at grain boundaries in the as-cast alloy were transformed into M23C6 carbides rich in Cr and Mo. With the increase of aging temperature, the grain boundary carbides gradually changed from continuous chains to dispersed spherical and ellipsoidal grains. The average spacing size of the grain boundary carbides gradually increased from 0.57 mu m to 0.74 mu m, and the distribution of carbides along the grain boundaries became more and more dispersed and uniform. In the alloys aged at 850 ?& nbsp;and 900 ?, severe dislocation pile-up and stress concentration around the continuous carbide chains at grain boundaries promoted the initiation and propagation of microcracks, resulting in low rotational bending fatigue property. When the alloy was aged at 950 ?, the dispersed grain boundary carbides could not only effectively hinder the grain boundary sliding, but also significantly reduce the dislocation pile-up and stress concentration around the carbides, thereby the rotating bending fatigue property of the K417G superalloy was improved. (C)& nbsp;2022 Elsevier B.V. All rights reserved.
资助项目	Liaoning Educational Committee[LJ2019014]
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000779065200002
资助机构	Liaoning Educational Committee
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/172830]
专题	金属研究所_中国科学院金属研究所
通讯作者	Yu, Xingfu
作者单位	1.Shenyang Univ Chem Technol, Sch Mech & Power Engn, Shenyang 110142, Peoples R China 2.Shenyang Univ Technol, Sch Mech Engn, Shenyang 110870, Peoples R China 3.Shenyang Univ Technol, Sch Mat Sci & Engn, Shenyang 110870, Peoples R China 4.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Yu, Xingfu,Wang, Shijie,Zheng, Dongyue,et al. Effect of heat treatment on rotating bending fatigue properties of K417G nickel-base superalloy [J]. JOURNAL OF ALLOYS AND COMPOUNDS,2022,905:7.
APA	Yu, Xingfu.,Wang, Shijie.,Zheng, Dongyue.,Shen, Xiangyang.,Li, Yanbin.,...&Liu, Fang.(2022). Effect of heat treatment on rotating bending fatigue properties of K417G nickel-base superalloy .JOURNAL OF ALLOYS AND COMPOUNDS,905,7.
MLA	Yu, Xingfu,et al." Effect of heat treatment on rotating bending fatigue properties of K417G nickel-base superalloy ".JOURNAL OF ALLOYS AND COMPOUNDS 905(2022):7.