IMR OpenIR
Phase constitution, microstructure and mechanical properties of a Ni-based superalloy specially designed for additive manufacturing
Wu, Bin1,2; Liang, Jing-jing1,3; Yang, Yan-hong1,3; Li, Jin-guo1,3; Zhou, Yi-zhou1
Corresponding AuthorLiang, Jing-jing(jjliang@imr.ac.cn)
2021-07-01
Source PublicationCHINA FOUNDRY
ISSN1672-6421
Volume18Issue:4Pages:397-408
AbstractIn this study, a kind of Ni-based superalloy specially designed for additive manufacturing (AM) was investigated. Thermo-Calc simulation and differential scanning calorimetry (DSC) analysis were used to determine phases and their transformation temperature. Experimental specimens were prepared by laser metal deposition (LMD) and traditional casting method. Microstructure, phase constitution and mechanical properties of the alloy were characterized by scanning electron microscopy (SEM), transmission scanning electron microscopy (TEM), X-ray diffraction (XRD) and tensile tests. The results show that this alloy contains two basic phases, gamma/gamma', in addition to these phases, at least two secondary phases may be present, such as MC carbides and Laves phases. Furthermore, the as-deposited alloy has finer dendrite, its mean primary dendrite arm space (PDAS) is about 30-45 mu m, and the average size of gamma' particles is 100-150 nm. However, the dendrite size of the as-cast alloy is much larger and its PDAS is 300-500 mu m with secondary and even third dendrite arms. Correspondingly, the alloy displays different tensile behavior with different processing methods, and the as-deposited specimen shows better ultimate tensile stress (1,085.7 +/- 51.7 MPa), yield stress (697 +/- 19.5 MPa) and elongation (25.8%+/- 2.2%) than that of the as-cast specimen. The differences in mechanical properties of the alloy are due to the different morphology and size of dendrites, gamma', and Laves phase, and the segregation of elements, etc. Such important information would be helpful for alloy application as well as new alloy development.
Keywordadditive manufacturing laser metal deposition Ni-based superalloy tensile behavior TG146 1(+)5 A
Funding OrganizationNational Science and Technology Major Project ; National Natural Science Foundation of China
DOI10.1007/s41230-021-9025-1
Indexed BySCI
Language英语
Funding ProjectNational Science and Technology Major Project[Y2019-VII-0011-0151] ; National Natural Science Foundation of China[51771190]
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000696546900014
PublisherSPRINGER SINGAPORE PTE LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/166942
Collection中国科学院金属研究所
Corresponding AuthorLiang, Jing-jing
Affiliation1.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
3.Space Mfg Technol CAS Key Lab, Beijing 100094, Peoples R China
Recommended Citation
GB/T 7714
Wu, Bin,Liang, Jing-jing,Yang, Yan-hong,et al. Phase constitution, microstructure and mechanical properties of a Ni-based superalloy specially designed for additive manufacturing[J]. CHINA FOUNDRY,2021,18(4):397-408.
APA Wu, Bin,Liang, Jing-jing,Yang, Yan-hong,Li, Jin-guo,&Zhou, Yi-zhou.(2021).Phase constitution, microstructure and mechanical properties of a Ni-based superalloy specially designed for additive manufacturing.CHINA FOUNDRY,18(4),397-408.
MLA Wu, Bin,et al."Phase constitution, microstructure and mechanical properties of a Ni-based superalloy specially designed for additive manufacturing".CHINA FOUNDRY 18.4(2021):397-408.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Wu, Bin]'s Articles
[Liang, Jing-jing]'s Articles
[Yang, Yan-hong]'s Articles
Baidu academic
Similar articles in Baidu academic
[Wu, Bin]'s Articles
[Liang, Jing-jing]'s Articles
[Yang, Yan-hong]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Wu, Bin]'s Articles
[Liang, Jing-jing]'s Articles
[Yang, Yan-hong]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.