IMR OpenIR
Dynamic globularization mechanism during hot working of Ti-6.5Al-3.5Mo-1.5Zr-0.3Si alloy with lamellar microstructure
Li, Xin1; Deng, Siying2; Wang, Songwei2; Song, Hongwu2; Zhang, Shihong2; Wang, Kelu1; Ouyang, Delai1
Corresponding AuthorSong, Hongwu(hwsong@imr.ac.cn)
2021
Source PublicationMATERIALS CHARACTERIZATION
ISSN1044-5803
Volume171Pages:11
AbstractIn the present work, the isothermal compression of Ti-6.5Al-3.5Mo-1.5Zr-0.3Si alloy with lamellar microstructure was conducted at 980 degrees C and strain rate range of 0.01-10 s(-1). Evolution of substructure during hot working was analyzed to investigate the dynamic globularization mechanism with the help of SEM and TEM techniques. The main conclusions are as follows: At 0.01 s(-1), the globularization mechanism is a continuous dynamic recrystallization, which is formed by the combination of the penetration of the beta phase into alpha lamella along the subgrain boundaries and the sliding between the subgrain boundaries. This process is accompanied by the coarsening of the globularized alpha phase. While in the strain rate range of 0.1-10 s(-1), the globularization mechanisms are the segmentation of alpha lamella along the twin grain boundaries and the process of discontinuous dynamic recrystallization, and the final equiaxed microstructure is smaller than the initial thickness of alpha lamella. Moreover, with the increase of strain rate and the decrease of temperature, discontinuous dynamic recrystalli-zation gradually becomes the dominant mechanism of globularization. The beta phase undergoes dynamic recovery or continuous dynamic recrystallization at different strain rate, which results in the globularization of beta lamellae. The alpha and beta lamellae promote each other in globularization.
KeywordTitanium alloy Hot compression Substructure evolution Globularization mechanism
Funding OrganizationNational Natural Science Foundation of China ; Key Laboratory for Microstructural Control of Metallic Materials of Jiangxi Province (Nanchang Hangkong University)
DOI10.1016/j.matchar.2020.110749
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[51761029] ; National Natural Science Foundation of China[51864035] ; National Natural Science Foundation of China[51875547] ; National Natural Science Foundation of China[JW201323004] ; National Natural Science Foundation of China[EJ201701513] ; National Natural Science Foundation of China[EJ201901454] ; Key Laboratory for Microstructural Control of Metallic Materials of Jiangxi Province (Nanchang Hangkong University)
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Materials Science, Characterization & Testing
WOS IDWOS:000616013600001
PublisherELSEVIER SCIENCE INC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/160662
Collection中国科学院金属研究所
Corresponding AuthorSong, Hongwu
Affiliation1.Nanchang Hangkong Univ, Sch Aeronaut Mfg Engn, Nanchang 330063, Jiangxi, Peoples R China
2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Li, Xin,Deng, Siying,Wang, Songwei,et al. Dynamic globularization mechanism during hot working of Ti-6.5Al-3.5Mo-1.5Zr-0.3Si alloy with lamellar microstructure[J]. MATERIALS CHARACTERIZATION,2021,171:11.
APA Li, Xin.,Deng, Siying.,Wang, Songwei.,Song, Hongwu.,Zhang, Shihong.,...&Ouyang, Delai.(2021).Dynamic globularization mechanism during hot working of Ti-6.5Al-3.5Mo-1.5Zr-0.3Si alloy with lamellar microstructure.MATERIALS CHARACTERIZATION,171,11.
MLA Li, Xin,et al."Dynamic globularization mechanism during hot working of Ti-6.5Al-3.5Mo-1.5Zr-0.3Si alloy with lamellar microstructure".MATERIALS CHARACTERIZATION 171(2021):11.
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
[Li, Xin]'s Articles
[Deng, Siying]'s Articles
[Wang, Songwei]'s Articles
Baidu academic
Similar articles in Baidu academic
[Li, Xin]'s Articles
[Deng, Siying]'s Articles
[Wang, Songwei]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Li, Xin]'s Articles
[Deng, Siying]'s Articles
[Wang, Songwei]'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.