IMR OpenIR
Repair of K403 Superalloy Damaged Blades by a Powder Metallurgy Method
Zhang Jie1,2; Zhai Yuchun1; Wang Maocai2
Corresponding AuthorZhai Yuchun(zhaiyc@smm.neu.edu.cn)
2015-09-01
Source PublicationRARE METAL MATERIALS AND ENGINEERING
ISSN1002-185X
Volume44Issue:9Pages:2222-2227
AbstractThe damaged K403 superalloy blades were repaired and remanufactured by a powder metallurgy repairing process (china powder metallurgy, CPM), using nickel-based superalloy powder containing a small amount of B alloy and nano-Ni powder separately. X-ray diffraction, scanning electronic microscope (SEM), EDX, and EPMA electro-probe were employed to investigate the phase composition, morphology and microstructure of the repaired areas. Meanwhile, performances of repairing areas and interface bonding were evaluated. Finally, the mechanism on the densification of repairing areas and the bonding of interface were also examined. The results show that the damaged blades could be restored to the original shape and size by CPM process, using appropriate repairing powder. In addition, it shows better properties using B alloy powder addition for K403 repairing. The diffusion of element B plays a key role in the densification of repairing areas and bonding of interface, in which the reaction equation could be expressed as NimBn+(Cr, W)->gamma+(Cr-2,W)B-2. According to calculation, in the CPM process, the concentration of element B in the interface could be decreased to below the eutectic concentration.
Keywordpowder metallurgy repairing process K403 superalloy blade
Indexed BySCI
Language英语
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000362612500027
PublisherNORTHWEST INST NONFERROUS METAL RESEARCH
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/120898
Collection中国科学院金属研究所
Corresponding AuthorZhai Yuchun
Affiliation1.Northeastern Univ, Shenyang 110819, Peoples R China
2.Chinese Acad Sci, State Key Lab Corros & Protect, Inst Met Res, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Zhang Jie,Zhai Yuchun,Wang Maocai. Repair of K403 Superalloy Damaged Blades by a Powder Metallurgy Method[J]. RARE METAL MATERIALS AND ENGINEERING,2015,44(9):2222-2227.
APA Zhang Jie,Zhai Yuchun,&Wang Maocai.(2015).Repair of K403 Superalloy Damaged Blades by a Powder Metallurgy Method.RARE METAL MATERIALS AND ENGINEERING,44(9),2222-2227.
MLA Zhang Jie,et al."Repair of K403 Superalloy Damaged Blades by a Powder Metallurgy Method".RARE METAL MATERIALS AND ENGINEERING 44.9(2015):2222-2227.
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