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Effect of twin boundaries on the microstructure and mechanical properties of Inconel 625 alloy
Gao, Yubi; Ding, Yutian; Chen, Jianjun; Xu, Jiayu; Ma, Yuanjun; Wang, Xingmao
2019-11-08
Source PublicationMATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN0921-5093
Volume767
AbstractThe study investigated the effect of twin boundaries on the microstructure and mechanical properties of Inconel 625 alloy during hot/cold deformation and subsequent heat treatment. And further the mechanisms of twin formation and strengthening were discussed. The results show that coarse deformed grains had both a strong Brass orientation {110} < 112 > and a high dislocation density as a result of deformation twinning, while fine recrystallized grains had both a weak Cube orientation {001} < 100 > and a low dislocation density which was attributed to recrystallization. Meanwhile, the deformation twins were formed by the motion of partial dislocation during hot or cold plastic deformation, while annealing twins were formed by growth accidents on a migrating grain boundary during dynamic or static recrystallization. The yield strength (ay) and elongation (epsilon(f)) of the as-cast sample (247 MPa and 41.00%) were significantly increased (366 MPa and 60.00%, 361 MPa and 52.88%) via hot/cold deformation and subsequent heat treated. This result indicates that tailoring the twin boundaries via thermo-mechanical processing can significantly improve strength and ductility of Inconel 625 alloy.
KeywordInconel 625 alloy Deformation twins Annealing twins Twin boundaries strengthening Eelectron backscatter diffraction (EBSD)
DOI10.1016/j.msea.2019.138361
URL查看原文
Indexed BySCI
Language英语
Funding ProjectNational Key Research and Development Program of China[2017YFA0700703] ; National Natural Science Foundation of China[51661019] ; program for Major Projects of Science and Technology in Gansu Province[145RTSA004]
WOS Research AreaScience & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000494052200048
PublisherELSEVIER SCIENCE SA
Citation statistics
Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.lut.edu.cn/handle/2XXMBERH/56497
Collection兰州理工大学
省部共建有色金属先进加工与再利用国家重点实验室
Corresponding AuthorDing, Yutian
AffiliationLanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China
First Author AffilicationState Key Laboratory Of Gansu Advanced Non-Ferrous Metal Materials
Corresponding Author AffilicationState Key Laboratory Of Gansu Advanced Non-Ferrous Metal Materials
First Signature AffilicationState Key Laboratory Of Gansu Advanced Non-Ferrous Metal Materials
Recommended Citation
GB/T 7714
Gao, Yubi,Ding, Yutian,Chen, Jianjun,et al. Effect of twin boundaries on the microstructure and mechanical properties of Inconel 625 alloy[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2019,767.
APA Gao, Yubi,Ding, Yutian,Chen, Jianjun,Xu, Jiayu,Ma, Yuanjun,&Wang, Xingmao.(2019).Effect of twin boundaries on the microstructure and mechanical properties of Inconel 625 alloy.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,767.
MLA Gao, Yubi,et al."Effect of twin boundaries on the microstructure and mechanical properties of Inconel 625 alloy".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 767(2019).
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