Influence Mechanism of Silicon on Carbide Phase Precipitation of a Corrosion Resistance Nickel Based Superalloy

doi:10.3390/ma13040959

IMR OpenIR

	Influence Mechanism of Silicon on Carbide Phase Precipitation of a Corrosion Resistance Nickel Based Superalloy
	Liu, Tao 1; Yang, Mei 1; Han, Fenfen 2; Dong, Jiasheng 3
通讯作者	Liu, Tao(liutao@jsut.edu.cn) ; Yang, Mei(myang@jsut.edu.cn) ; Han, Fenfen(hanfenfen@sinap.ac.cn) ; Dong, Jiasheng(djs@imr.ac.cn)
	2020-02-02
发表期刊	MATERIALS
卷号	13 期号:4 页码:24
摘要	The effect of silicon on diffusion behavior of the carbide forming elements in Ni-Mo-Cr-Fe based corrosion-resistant alloy is studied by diffusion couple experiment. One group of diffusion couples are made of the alloy with a different silicon content, another group of diffusion couples are made of pure nickel and the alloy with different silicon content (0Si, 2Si). Two groups of alloys with same silicon content and different carbon content are also prepared, the microstructure of solution and aging state of these two groups alloys are analyzed, and their stress rupture properties are tested. The effect of silicon on the diffusion of alloy elements and the interaction effect of carbon and silicon on the microstructure and stress rupture properties of the alloy are analyzed. The mechanism of Si on the precipitation behavior of carbide phase in Ni-Mo-Cr-Fe corrosion resistant alloy is discussed. The results show that silicon can promote the diffusion of carbide forming elements and the formation of carbide. The precipitation behavior of the secondary phase is the result of the interaction effect of silicon and carbon, and is related to the thermal history of the alloy. Combined with the characteristic of primary carbides, it is confirmed that the precipitation of M12C type secondary carbide is caused by the relative lack of carbon element and the relative enrichment of carbide forming elements such as molybdenum. The stress rupture properties of two silicon-containing alloys with different carbon contents in solution and aging state are tested. The stress rupture life of low carbon alloy is lower compared with high carbon alloy at solution state, but after aging treatment, the stress rupture life of low carbon alloy is significantly improved, and higher than that of high carbon alloy. The main aim of this research is to reveal the influence mechanism of silicon on carbide phase precipitation of a Ni-Mo-Cr-Fe based corrosion-resistant superalloy, which provides theoretical basis and reference for later alloy design and engineering application.
关键词	Ni-Mo-Cr based superalloy silicon diffusion carbide precipitation
资助者	National Natural Science Foundation of China ; Jiangsu Government Scholarship for Overseas Studies
DOI	10.3390/ma13040959
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51601214] ; National Natural Science Foundation of China[51601078] ; Jiangsu Government Scholarship for Overseas Studies[JS-2019-322]
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
WOS记录号	WOS:000520419300150
出版者	MDPI
引用统计	被引频次：3[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/321006/138048
专题	中国科学院金属研究所
通讯作者	Liu, Tao; Yang, Mei; Han, Fenfen; Dong, Jiasheng
作者单位	1.Jiangsu Univ Technol, Sch Mat Engn, Changzhou 213001, Jiangsu, Peoples R China 2.Shanghai Inst Appl Phys, Chinese Acad Sci, Shanghai 201800, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Liu, Tao,Yang, Mei,Han, Fenfen,et al. Influence Mechanism of Silicon on Carbide Phase Precipitation of a Corrosion Resistance Nickel Based Superalloy[J]. MATERIALS,2020,13(4):24.
APA	Liu, Tao,Yang, Mei,Han, Fenfen,&Dong, Jiasheng.(2020).Influence Mechanism of Silicon on Carbide Phase Precipitation of a Corrosion Resistance Nickel Based Superalloy.MATERIALS,13(4),24.
MLA	Liu, Tao,et al."Influence Mechanism of Silicon on Carbide Phase Precipitation of a Corrosion Resistance Nickel Based Superalloy".MATERIALS 13.4(2020):24.