| Dynamic recrystallization behavior of GH4169G alloy during hot compressive deformation | |
| Jia, Dan1,2; Sun, Wenru2; Xu, Dongsheng2; Liu, Fang2 | |
| Corresponding Author | Sun, Wenru(wrsun@imr.ac.cn) |
| 2019-09-01 | |
| Source Publication | JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
 |
| ISSN | 1005-0302 |
| Volume | 35Issue:9Pages:1851-1859 |
| Abstract | The microstructure evolutions and nucleation mechanisms of GH4169G alloy were studied by optical microscope, electron backscatter diffraction (EBSD) and transmission electron microscope (TEM). The hot compression tests were performed different imposed reductions in the range of true strain from 0.12 to 1.2 at the temperatures of 930 degrees-1050 degrees with strain rates of 0.01 s(-1)-1 s(-1). It is found that cumulative and local misorientation increase firstly and then decrease when the strain is increased due to the progress of dynamic recrystallization (DRX). The low angle boundaries (LAGBs) rapidly develop to high angle boundaries (HAGBs) at relatively high deformation temperature or the low strain rate. There are three DRX mechanisms observed for GH4169 G alloy during hot deformation. Discontinuous dynamic recrystallization (DDRX) as the dominant mechanism for GH4169 G alloy is characterized by typical necklace structures and bulged-original boundaries. Besides, different deformation bands with dislocation cells formed in deformed matrix at low temperature and large strain, which indicates that continuous dynamic recrystallization (CDRX) contributed to the DRX process. The twin boundaries lost their coherent characteristics and provide sites for nucleation, which also accelerates the nucleation of DRX. (C) 2019 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology. |
| Keyword | GH4169G alloy Dynamic recrystallization Nucleation mechanism |
| DOI | 10.1016/j.jmst.2019.04.018 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Research Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000475870600006 |
| Publisher | JOURNAL MATER SCI TECHNOL |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/134715 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Sun, Wenru |
| Affiliation | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China |
| Recommended Citation GB/T 7714 | Jia, Dan,Sun, Wenru,Xu, Dongsheng,et al. Dynamic recrystallization behavior of GH4169G alloy during hot compressive deformation[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2019,35(9):1851-1859. |
| APA | Jia, Dan,Sun, Wenru,Xu, Dongsheng,&Liu, Fang.(2019).Dynamic recrystallization behavior of GH4169G alloy during hot compressive deformation.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,35(9),1851-1859. |
| MLA | Jia, Dan,et al."Dynamic recrystallization behavior of GH4169G alloy during hot compressive deformation".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 35.9(2019):1851-1859. |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment