Effect of Zr on microstructure and hot cracking susceptibility of ZGH451 superalloy fabricated by direct energy deposition
文献类型：期刊论文
| 作者 | Wang, Peng1,2; Song, Wei1,2; Yang, Shulin3; Yang, Junying1,2; Liang, Jingjing1; Li, Jinguo1; Yang, Zhiqing1; Zhou, Yizhou1; Sun, Xiaofeng1 |
| 刊名 | JOURNAL OF ALLOYS AND COMPOUNDS
 |
| 出版日期 | 2023-11-25 |
| 卷号 | 965页码:15 |
| 关键词 | Ni -based superalloy Direct energy deposition Zirconium Hot cracking |
| ISSN号 | 0925-8388 |
| DOI | 10.1016/j.jallcom.2023.171371 |
| 通讯作者 | Liang, Jingjing(jjliang@imr.ac.cn) ; Li, Jinguo(jgli@imr.ac.cn) |
| 英文摘要 | Four groups of newly developed Ni-based superalloy samples with different Zr contents were manufactured by Direct energy deposition (DED). This study focuses on the influence of Zr element concentration on microstructure and cracking formation mechanism in DED-processed Ni-based superalloy ZGH451. Although Zr content is low, it strongly affects the formation of the precipitated phase and hot tearing tendency. Measurement of the crack area showed that the crack density value increases with the Zr concentration. According to thermodynamic simulation results and microstructures observed, Zr microsegregation in the interdendritic regions and considerable amounts of Zr is present in oxides or carbides. Zr contributes to forming large-size carbides mainly due to zirconia providing nucleation sites and the dissolution of Zr. Simultaneously, the solidification has been retarded due to the continuous accumulation of large Zr atoms, which increases the & gamma;-& gamma;& PRIME; eutectic fraction. Moreover, Zr addition could effectively decrease the solidus temperature of ZGH451 alloys, leading to the critical liquid film at the end of solidification. Based on these results, staying below 0.05 wt% of Zr content to reduce the risk of hot tearing in additive manufacturing superalloy was proposed. |
| 资助项目 | National Key Ramp;D Program of China[2021YFB3702503] ; Science Center for Gas Turbine Project[P2022-C-IV-002-001] ; National Science and Technology Major Project[Y2019-VII-0011-0151] |
| WOS研究方向 | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001049460900001 |
| 出版者 | ELSEVIER SCIENCE SA |
| 资助机构 | National Key Ramp;D Program of China ; Science Center for Gas Turbine Project ; National Science and Technology Major Project |
| 源URL | [http://ir.imr.ac.cn/handle/321006/178936]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Liang, Jingjing; Li, Jinguo |
| 作者单位 | 1.Chinese Acad Sci, Inst Met Res, Shichangxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.AECC Shenyang Liming Aeroengine Corp Ltd, Shenyang 110043, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Peng,Song, Wei,Yang, Shulin,et al. Effect of Zr on microstructure and hot cracking susceptibility of ZGH451 superalloy fabricated by direct energy deposition[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2023,965:15. |
| APA | Wang, Peng.,Song, Wei.,Yang, Shulin.,Yang, Junying.,Liang, Jingjing.,...&Sun, Xiaofeng.(2023).Effect of Zr on microstructure and hot cracking susceptibility of ZGH451 superalloy fabricated by direct energy deposition.JOURNAL OF ALLOYS AND COMPOUNDS,965,15. |
| MLA | Wang, Peng,et al."Effect of Zr on microstructure and hot cracking susceptibility of ZGH451 superalloy fabricated by direct energy deposition".JOURNAL OF ALLOYS AND COMPOUNDS 965(2023):15. |
入库方式： OAI收割
来源：金属研究所
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