| Effect of strain rate on microstructure evolution of a fine-grained gamma plus gamma' Ni-Co-base superalloy during superplasticity | |
| Al-Hammadi, Rashad A.1,2; Zhang, Rui1; Cui, Chuanyong1; Zhou, Zijian1; Zhou, Yizhou1 | |
| Corresponding Author | Zhang, Rui(rzhang@imr.ac.cn) ; Cui, Chuanyong(chycui@imr.ac.cn) |
| 2023-09-01 | |
| Source Publication | MATERIALS CHARACTERIZATION
 |
| ISSN | 1044-5803 |
| Volume | 203Pages:13 |
| Abstract | The effect of strain rate on microstructure evolution of a Ni-Co-base superalloy during superplasticity was examined in this study. The experiments were conducted at 1050 degrees C with various strain rates. The strain rate had profound impacts on flow behavior and elongation that were connected to the characteristics of dynamic recrystallization (DRX). A comparatively high strain rate promoted the occurrence of DRX, and the elongation of >1335% prior to failure was obtained at 0.01/s. Scanning electron microscope (SEM), electron backscatter diffraction (EBSD), and transmission electron microscopy (TEM) measurements were used to investigate the deformed microstructures. A 0.01/s strain rate accelerated the recovery and dissolution within the primary gamma'-phase, resulting in a reduction in its volume fraction and size, which enhanced the DRX process of the gamma-matrix. The primary gamma'-phase partly retarded the DRX process of gamma-matrix grains, which was expedited by twin boundaries. Regardless of strain rate, discontinuous-DRX (DDRX) dominated the superplastic deformation. Meanwhile, continuous-DRX (CDRX) occurrence increased slightly at 0.1/s, which had a minor effect during the superplastic deformation of the Ni-Co-base superalloy. |
| Keyword | Ni-Co-base superalloy Superplasticity Microstructure evolution gamma'-phase Twin |
| Funding Organization | National Key R amp; D Program of China ; Natural Science Foundation Project of Liaoning Province ; Youth Innovation Promotion Association, CAS |
| DOI | 10.1016/j.matchar.2023.113112 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Key R amp; D Program of China[2019YFA0705300] ; Natural Science Foundation Project of Liaoning Province[2023-MS-024] ; Youth Innovation Promotion Association, CAS[2023202] |
| WOS Research Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Materials Science, Characterization & Testing |
| WOS ID | WOS:001031381700001 |
| Publisher | ELSEVIER SCIENCE INC |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/178670 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Zhang, Rui; Cui, Chuanyong |
| Affiliation | 1.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China |
| Recommended Citation GB/T 7714 | Al-Hammadi, Rashad A.,Zhang, Rui,Cui, Chuanyong,et al. Effect of strain rate on microstructure evolution of a fine-grained gamma plus gamma' Ni-Co-base superalloy during superplasticity[J]. MATERIALS CHARACTERIZATION,2023,203:13. |
| APA | Al-Hammadi, Rashad A.,Zhang, Rui,Cui, Chuanyong,Zhou, Zijian,&Zhou, Yizhou.(2023).Effect of strain rate on microstructure evolution of a fine-grained gamma plus gamma' Ni-Co-base superalloy during superplasticity.MATERIALS CHARACTERIZATION,203,13. |
| MLA | Al-Hammadi, Rashad A.,et al."Effect of strain rate on microstructure evolution of a fine-grained gamma plus gamma' Ni-Co-base superalloy during superplasticity".MATERIALS CHARACTERIZATION 203(2023):13. |
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