Microstructure control and hot cracking behavior of the new Ni-Co based superalloy prepared by electron beam smelting layered solidification technology
文献类型：期刊论文
| 作者 | Cui, Hongyang1,2; Tan, Yi1,2; Ning, Lidan1,2; Bai, Rusheng1,2; You, Xiaogang1,2; Cui, Chuanyong3; Li, Pengting1,2 |
| 刊名 | JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2024-03-10 |
| 卷号 | 175页码:55-71 |
| 关键词 | Electron beam smelting layered solidification technology CET Thermal cycling Hot cracking |
| ISSN号 | 1005-0302 |
| DOI | 10.1016/j.jmst.2023.07.047 |
| 通讯作者 | Li, Pengting(ptli@dlut.edu.cn) |
| 英文摘要 | The prevention of hot cracking formation is of utmost importance in the production of the new Ni-Co based superalloys through the utilization of the electron beam smelting layered solidification technique (EBSL), as it ensures exceptional homogeneity and dependable consistency of the specimens. In contrast to previous studies that focused on minimizing the liquid film and solidification range, our methodology adopts a distinct approach. In this research, a novel methodology was employed to mitigate internal stresses through the implementation of equiaxed grain layers via an alternately reduced cooling method. This ultimately resulted in the elimination of hot cracking. To be more specific, the transition from a columnar to an equiaxed structure was observed during the layer-by-layer construction process in the fabrication of the new Ni-Co based superalloy in EBSL. The EBSL-Ni-Co superalloy, when subjected to the alternating reduction cooling method, exhibited an internal stress of 49 MPa. This value represents a significant reduction of 83.8% compared to the internal stress observed when employing the linear reduction cooling method. Additionally, the solvus temperature of the gamma - gamma ' eutectic phases in EBSL-Ni-Co superalloys produced by the alternating reduction cooling method is significantly higher. Intriguingly, the N th layer of the EBSL-Ni-Co based superalloys produced by EBSL simultaneously heats treated with the preceding layers. And the low melting point phase gradually dissolved back into the matrix. The implementation of an alternating reduced cooling method successfully mitigated the formation of the liquid film in the gamma - gamma ' eutectic phase and the buildup of internal stresses in the EBSL-Ni-Co superalloy during its manufacturing process. These discoveries open up a novel preparation procedure pathway for the manufacture of crack-free superalloys with superior mechanical characteristics using EBSL. (c) 2023 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology. |
| 资助项目 | National Key Research and Development Program of China[2019YFA0705300] ; National Natural Science Foundation of China[52004051] ; Innovation Team Project for Key Fields of Dalian[2019RT13] |
| WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001080417300001 |
| 出版者 | JOURNAL MATER SCI TECHNOL |
| 资助机构 | National Key Research and Development Program of China ; National Natural Science Foundation of China ; Innovation Team Project for Key Fields of Dalian |
| 源URL | [http://ir.imr.ac.cn/handle/321006/179436]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Li, Pengting |
| 作者单位 | 1.Key Lab Energy Beam Met & Adv Mat Preparat Liaonin, Dalian 116024, Peoples R China 2.Dalian Univ Technol, Sch Mat Sci & Engn, Dalian 116024, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Superalloys Div, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cui, Hongyang,Tan, Yi,Ning, Lidan,et al. Microstructure control and hot cracking behavior of the new Ni-Co based superalloy prepared by electron beam smelting layered solidification technology[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2024,175:55-71. |
| APA | Cui, Hongyang.,Tan, Yi.,Ning, Lidan.,Bai, Rusheng.,You, Xiaogang.,...&Li, Pengting.(2024).Microstructure control and hot cracking behavior of the new Ni-Co based superalloy prepared by electron beam smelting layered solidification technology.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,175,55-71. |
| MLA | Cui, Hongyang,et al."Microstructure control and hot cracking behavior of the new Ni-Co based superalloy prepared by electron beam smelting layered solidification technology".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 175(2024):55-71. |
入库方式： OAI收割
来源：金属研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。