Effect of C Content on the Microstructure and Stress Rupture Properties of Nickel-Based Superalloy K4750

doi:10.1007/s11665-022-07628-0

IMR OpenIR

	Effect of C Content on the Microstructure and Stress Rupture Properties of Nickel-Based Superalloy K4750
	Li, Xiaoxiao 1,2,3; Ou, Meiqiong 1; Yu, Xun 1; Hao, Xianchao 1; Ma, Yingche 1
通讯作者	Ma, Yingche(ycma@imr.ac.cn)
	2022-11-11
发表期刊	JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
ISSN	1059-9495
页码	15
摘要	The effect of C content on the microstructure and stress rupture properties of nickel-based superalloy K4750 was studied by SEM, EBSD, TEM, EPMA and stress rupture tests. With the increase in C content, the size and quantity of MC and M23C6 carbides in experimental alloys increased, and the morphology of MC carbides changed from small blocky or rod to large blocky or skeleton. The inhibition of MC carbides on grain boundary migration made the grain size of as-cast alloys inversely proportional to C content. As C content went from 0.07 to 0.10 wt.% and then to 0.12 wt.%, the stress rupture life of K4750 alloy at 750 degrees C/430 MPa increased from 160.7 to 222.0 h, and then decreased to 184.4 h, and the elongation increased from 5.1 to 11.5% and then decreased to 9.8%. The difference of stress rupture properties of K4750 alloys could be attributed to the influence of varied C content on carbides precipitation characteristics. The moderate increase in MC and M23C6 carbides could effectively pin grain boundaries and reduced the tendency of forming micro-voids and micro-cracks, which was beneficial to stress properties of K4750 alloy. On the contrary, when the size and quantity of carbides increased excessively, they could become potential crack sources in the process of stress rupture tests.
关键词	carbides carbon nickel-based superalloy stress rupture properties
资助者	National Major Science and Technology Projects of China ; National Natural Science Foundation of China
DOI	10.1007/s11665-022-07628-0
收录类别	SCI
语种	英语
资助项目	National Major Science and Technology Projects of China[J2019-VI-0004-0118] ; National Major Science and Technology Projects of China[J2019-VII-0002-0142] ; National Natural Science Foundation of China[52001314]
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
WOS记录号	WOS:000881903900002
出版者	SPRINGER
引用统计	被引频次：6[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/321006/176721
专题	中国科学院金属研究所
通讯作者	Ma, Yingche
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Changzhou Univ, Sch Mat Sci & Engn, Changzhou 213164, Peoples R China 3.Changzhou Univ, Jiangsu Key Lab Mat Surface Sci & Technol, Changzhou 213164, Peoples R China
推荐引用方式 GB/T 7714	Li, Xiaoxiao,Ou, Meiqiong,Yu, Xun,et al. Effect of C Content on the Microstructure and Stress Rupture Properties of Nickel-Based Superalloy K4750[J]. JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE,2022:15.
APA	Li, Xiaoxiao,Ou, Meiqiong,Yu, Xun,Hao, Xianchao,&Ma, Yingche.(2022).Effect of C Content on the Microstructure and Stress Rupture Properties of Nickel-Based Superalloy K4750.JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE,15.
MLA	Li, Xiaoxiao,et al."Effect of C Content on the Microstructure and Stress Rupture Properties of Nickel-Based Superalloy K4750".JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE (2022):15.