| Effect of Ta Addition on the Microstructure and Tensile Properties of a Ni-Co Base Superalloy | |
| Zhu, C. Z.1,2; Zhang, R.1; Cui, C. Y.1; Zhou, Y. Z.1; Yuan, Y.3; Yu, Z. S.3; Liu, X.3; Sun, X. F.1 | |
| Corresponding Author | Zhang, R.(rzhang@imr.ac.cn) ; Cui, C. Y.(chycui@imr.ac.cn) |
| 2020-11-09 | |
| Source Publication | METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
 |
| ISSN | 1073-5623 |
| Volume | 52Issue:1Pages:11 |
| Abstract | Herein, the effect of Ta addition (0 and 2 wt pct) on the tensile properties of a Ni-Co base superalloy was investigated in the temperature range of 23-900 degrees C. The results revealed that the addition of Ta improved the strength of the superalloy at all experimental temperatures and increased the plasticity at 760 degrees C. In addition, the microstructural observations indicate that Ta addition promoted the precipitation of gamma ' precipitates, as well as the precipitation of (Ta, Ti)-rich MC carbides. The addition of 2 wt pct Ta promoted twinning and, thus, transformed the fracture mechanism of the alloy from an intergranular brittle fracture to a mixed ductile and brittle fracture at 760 degrees C. Furthermore, the tensile properties and the related microstructures, deformation mechanisms, and fracture mechanisms of the experimental alloys are discussed. Finally, we demonstrated that the combined effect of the increase in the grain boundary strength, the reduction in the critical resolved shear stress, and the promotion of twinning induced the synchronous improvement of strength and plasticity of the alloy at 760 degrees C. |
| Funding Organization | National Natural Science Foundation of China ; Ministry of Science and Technology of China |
| DOI | 10.1007/s11661-020-06081-9 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[51671189] ; Ministry of Science and Technology of China[2017YFA0700703] ; Ministry of Science and Technology of China[2019YFA0705304] |
| WOS Research Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000588003200001 |
| Publisher | SPRINGER |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/141253 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Zhang, R.; Cui, C. Y. |
| Affiliation | 1.Chinese Acad Sci, Inst Metal Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, 96 Jinzhai Rd, Hefei 230026, Peoples R China 3.Xian Thermal Power Res Inst Co Ltd, 136 Xingqing Rd, Xian 710032, Peoples R China |
| Recommended Citation GB/T 7714 | Zhu, C. Z.,Zhang, R.,Cui, C. Y.,et al. Effect of Ta Addition on the Microstructure and Tensile Properties of a Ni-Co Base Superalloy[J]. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE,2020,52(1):11. |
| APA | Zhu, C. Z..,Zhang, R..,Cui, C. Y..,Zhou, Y. Z..,Yuan, Y..,...&Sun, X. F..(2020).Effect of Ta Addition on the Microstructure and Tensile Properties of a Ni-Co Base Superalloy.METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE,52(1),11. |
| MLA | Zhu, C. Z.,et al."Effect of Ta Addition on the Microstructure and Tensile Properties of a Ni-Co Base Superalloy".METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE 52.1(2020):11. |
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