IMR OpenIR
Hierarchical microstructure in high Nb-containing TiAl alloy
He, Neng1,2; Quan, Maohua3; Lin, Junpin4; He, Lianlong1,2; Hu, Changyi5
Corresponding AuthorHe, Lianlong(llhe@imr.ac.cn) ; Hu, Changyi(hcy@ipm.com.cn)
2021
Source PublicationMATERIALS CHARACTERIZATION
ISSN1044-5803
Volume171Pages:8
AbstractPlate-like eta-Nb(Ti,Al)(3) precipitates with hierarchical microstructure comprised of alternating arrangement of gamma-(Ti,Nb)Al and eta plates in the Ti-55Al-22Nb alloy have been investigated using transmission electron microscopy. In addition, the orientation relationship (OR) between eta precipitates and gamma matrix is determined to be tetragonal-tetragonal. The habit plane of eta precipitates is along {022) crystal planes of gamma matrix. And the interface structure between them can be described using the classical 'terrace-disconnection' theory. Furthermore, the phenomenon of phase separation responsible for the formation of this hierarchical microstructure can be well explained by the chemical free energy, that is, Al-depletion and Ti-enrichment in eta precipitate drive the splitting of eta precipitate. To the authors' knowledge, this is the first work which demonstrates such a hierarchical microstructure in eta precipitate in high Nb-containing TiAl alloy.
KeywordTiAl alloy Precipitates Orientation relationship Terrace-disconnection Hierarchical microstructure Phase separation
Funding OrganizationState Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals, China ; National Natural Science Foundation of China
DOI10.1016/j.matchar.2020.110767
Indexed BySCI
Language英语
Funding ProjectState Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals, China[SKL-SPM-201805] ; National Natural Science Foundation of China[51831001]
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Materials Science, Characterization & Testing
WOS IDWOS:000616010200002
PublisherELSEVIER SCIENCE INC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/160606
Collection中国科学院金属研究所
Corresponding AuthorHe, Lianlong; Hu, Changyi
Affiliation1.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
3.Univ Sci & Technol Beijing, Inst Adv Mat & Technol, Beijing 10083, Peoples R China
4.Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 10083, Peoples R China
5.Kunming Inst Precious Met, State Key Lab Adv Technol Comprehens Utilizat Pla, Kunming 650106, Yunnan, Peoples R China
Recommended Citation
GB/T 7714
He, Neng,Quan, Maohua,Lin, Junpin,et al. Hierarchical microstructure in high Nb-containing TiAl alloy[J]. MATERIALS CHARACTERIZATION,2021,171:8.
APA He, Neng,Quan, Maohua,Lin, Junpin,He, Lianlong,&Hu, Changyi.(2021).Hierarchical microstructure in high Nb-containing TiAl alloy.MATERIALS CHARACTERIZATION,171,8.
MLA He, Neng,et al."Hierarchical microstructure in high Nb-containing TiAl alloy".MATERIALS CHARACTERIZATION 171(2021):8.
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
[He, Neng]'s Articles
[Quan, Maohua]'s Articles
[Lin, Junpin]'s Articles
Baidu academic
Similar articles in Baidu academic
[He, Neng]'s Articles
[Quan, Maohua]'s Articles
[Lin, Junpin]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[He, Neng]'s Articles
[Quan, Maohua]'s Articles
[Lin, Junpin]'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.