Effect of Carbon on the Microstructures and Stress Rupture Properties of a Polycrystalline Ni-Based Superalloy

doi:10.1007/s40195-024-01769-y

IMR OpenIR

	Effect of Carbon on the Microstructures and Stress Rupture Properties of a Polycrystalline Ni-Based Superalloy
	Wang, Han 1,2; Sun, Shijie 1; Sheng, Naicheng 1; Hou, Guichen 1; Li, Jinguo 1; Zhou, Yizhou 1; Sun, Xiaofeng 1
通讯作者	Sheng, Naicheng(ncsheng@imr.ac.cn) ; Zhou, Yizhou(yzzhou@imr.ac.cn)
	2024-09-23
发表期刊	ACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN	1006-7191
页码	13
摘要	The effect of carbon content on the microstructures and stress rupture properties of a newly developed polycrystalline Ni-based superalloy with high Cr content has been studied. It was observed that both grain size and the number of carbides increased with an increase in carbon content. After heat treatment, granular M23C6 carbides were dispersed around MC carbides along grain boundaries and inside grains. The quantity of granular M23C6 carbides increased while their sizes decreased. These findings can be verified with the results of thermodynamic calculation and differential scanning calorimetry analysis. The stress rupture times (975 degree celsius/225 MPa) increased from 13.3 to 25.5 h with the carbon content increased from 0.1 to 0.2 wt.%. The improvement can be attributed to two primary factors. Firstly, grain boundary is typically weak region during deformation process and the grain size increased as carbon content increased in the alloy. Secondly, carbides act as hindrances to impede dislocation movement, leading to dislocation entanglement. As carbon content rose, the quantity of carbides in interdendritic regions and grain boundaries increased, providing a certain degree of strengthening effect and resulting in a longer stress rupture time.
关键词	Ni-based superalloy Microstructure Stress rupture property Carbon Carbide
资助者	National Natural Science Foundation of China ; National Key Research and Development Program of China ; Natural Science Foundation of Liaoning Province ; Science Center for Gas Turbine Project
DOI	10.1007/s40195-024-01769-y
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[52303394] ; National Key Research and Development Program of China[2022YFB3705000] ; Natural Science Foundation of Liaoning Province[2023-BS-015] ; Science Center for Gas Turbine Project[P2022-C-IV-002-001]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001318282800002
出版者	CHINESE ACAD SCIENCES, INST METAL RESEARCH
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/321006/190132
专题	中国科学院金属研究所
通讯作者	Sheng, Naicheng; Zhou, Yizhou
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, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Wang, Han,Sun, Shijie,Sheng, Naicheng,et al. Effect of Carbon on the Microstructures and Stress Rupture Properties of a Polycrystalline Ni-Based Superalloy[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2024:13.
APA	Wang, Han.,Sun, Shijie.,Sheng, Naicheng.,Hou, Guichen.,Li, Jinguo.,...&Sun, Xiaofeng.(2024).Effect of Carbon on the Microstructures and Stress Rupture Properties of a Polycrystalline Ni-Based Superalloy.ACTA METALLURGICA SINICA-ENGLISH LETTERS,13.
MLA	Wang, Han,et al."Effect of Carbon on the Microstructures and Stress Rupture Properties of a Polycrystalline Ni-Based Superalloy".ACTA METALLURGICA SINICA-ENGLISH LETTERS (2024):13.