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Influence Mechanism of Silicon on Carbide Phase Precipitation of a Corrosion Resistance Nickel Based Superalloy
Liu, Tao1; Yang, Mei1; Han, Fenfen2; Dong, Jiasheng3
Corresponding AuthorLiu, 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
Source PublicationMATERIALS
Volume13Issue:4Pages:24
AbstractThe 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.
KeywordNi-Mo-Cr based superalloy silicon diffusion carbide precipitation
Funding OrganizationNational Natural Science Foundation of China ; Jiangsu Government Scholarship for Overseas Studies
DOI10.3390/ma13040959
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[51601214] ; National Natural Science Foundation of China[51601078] ; Jiangsu Government Scholarship for Overseas Studies[JS-2019-322]
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Multidisciplinary
WOS IDWOS:000520419300150
PublisherMDPI
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/138048
Collection中国科学院金属研究所
Corresponding AuthorLiu, Tao; Yang, Mei; Han, Fenfen; Dong, Jiasheng
Affiliation1.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
Recommended Citation
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.
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