As-casting structure and homogenization behavior of hundred-kilogram level GH4068 ingot prepared by electron-beam drip melting layered solidification technology
文献类型：期刊论文
| 作者 | Bai, Rusheng1,2; Tan, Yi1,2; Yang, Lin1,2; Ning, Lidan1,2; Cui, Chuanyong3; Wang, Yunpeng1; Li, Pengting1,2 |
| 刊名 | VACUUM
 |
| 出版日期 | 2025 |
| 卷号 | 231页码:13 |
| 关键词 | Superalloy Electron beam drip melting As-cast structure Homogenization |
| ISSN号 | 0042-207X |
| DOI | 10.1016/j.vacuum.2024.113718 |
| 通讯作者 | Tan, Yi(lnsolar@dlut.edu.cn) |
| 英文摘要 | To expand the size of the electron beam smelted superalloy ingot, the method of electron beam drip melting layer solidification technology (EBDS-LST) was employed to prepare a GH4068 superalloy ingot with a diameter of 220 mm and a height of 550 mm. The ingot's structural characteristics, segregation situation, and homogenization behavior were investigated. The results show that the EBDS-LST GH4068 ingot exhibits no macroscopic segregation, with grains forming an ordered composite structure of "columnar grain-equiaxed grain-columnar grain". There is only primary dendrite present within the ingot, and the precipitated phase between dendrite cores is (gamma+gamma ') eutectic phase only. The electron beam drip melting process effectively reduces the depth of the melt pool, with a melt pool aspect ratio (MPAR) of 7.3. The segregation degree in the solidified portion decreases with an increase in the number of solidification layers. The typical segregation coefficients for Ti and W are K-Ti > 0.7 and K-W<1.5, respectively. The optimal single-stage homogenization process for the ingot was determined to be at 1160 C-degrees for 20h. |
| 资助项目 | National Key R&D Program of China[2019YFA0705300] |
| WOS研究方向 | Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001348873400001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 资助机构 | National Key R&D Program of China |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Tan, Yi |
| 作者单位 | 1.Dalian Univ Technol, Sch Mat Sci & Engn, Dalian 116024, Peoples R China 2.Dalian Univ Technol, Key Lab Energy Beam Met & Adv Mat Preparat Liaonin, Dalian 116024, Peoples R China 3.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Bai, Rusheng,Tan, Yi,Yang, Lin,et al. As-casting structure and homogenization behavior of hundred-kilogram level GH4068 ingot prepared by electron-beam drip melting layered solidification technology[J]. VACUUM,2025,231:13. |
| APA | Bai, Rusheng.,Tan, Yi.,Yang, Lin.,Ning, Lidan.,Cui, Chuanyong.,...&Li, Pengting.(2025).As-casting structure and homogenization behavior of hundred-kilogram level GH4068 ingot prepared by electron-beam drip melting layered solidification technology.VACUUM,231,13. |
| MLA | Bai, Rusheng,et al."As-casting structure and homogenization behavior of hundred-kilogram level GH4068 ingot prepared by electron-beam drip melting layered solidification technology".VACUUM 231(2025):13. |
入库方式： OAI收割
来源：金属研究所
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