Effect of the Spacial Dimensions on Solidification Defects in Rejoined Platform of Ni-Based Single-Crystal Superalloy Castings Under Different Withdrawal Rates
文献类型：期刊论文
| 作者 | Xiao, Jiuhan1,2; Jiang, Weiguo2,3; Han, Dongyu1,2; Li, Kaiwen2; Lu, Yuzhang2; Lou, Langhong2 |
| 刊名 | METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
 |
| 出版日期 | 2021-04-28 |
| 页码 | 12 |
| ISSN号 | 1073-5623 |
| DOI | 10.1007/s11661-021-06287-5 |
| 通讯作者 | Jiang, Weiguo(jwg@wfust.edu.cn) |
| 英文摘要 | The formation of solidification defects in rejoined platforms with different dendrite developing distances in horizontal direction and solidification heights in the directional solidification direction of DD413 Ni-based single-crystal (SX) castings were investigated under different withdrawal rates. The microstructure was investigated by a high-resolution image scanner and an optical microscope, and the crystallographic orientation of rejoined platforms was characterized by electron backscatter diffraction (EBSD). The thermal and stress fields during the solidification process were simulated by ProCAST finite element software. The experimental results show that the solidification defects including freckles, slivers, and low-angle boundaries (LABs) formed in the rejoined platforms can be affected by the span size and the solidification height. Findings reveal that solidification defects are prone to form in the rejoined platform with 100 mm span size and 220 mm solidification height under the withdrawal rates of 1 to 6 mm/min. In addition, the temperature gradient decreases and the thermal stress increases in the rejoined platform with the increase of solidification height, which reduces the stability of dendrite growth and further promotes the formation of solidification defects. The sliver defect was observed in the rejoined platform with different span sizes at 40 mm solidification height under the withdrawal rate of 6 mm/min, and the reasons are discussed. |
| 资助项目 | National Natural Science Foundation of China[51674235] ; National Science and Technology Major Project of China[2017VI-0001-0070] ; National Science and Technology Major Project of China[2017-VI-0019-0091] |
| WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000645198200002 |
| 出版者 | SPRINGER |
| 资助机构 | National Natural Science Foundation of China ; National Science and Technology Major Project of China |
| 源URL | [http://ir.imr.ac.cn/handle/321006/161322]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Jiang, Weiguo |
| 作者单位 | 1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 3.Weifang Univ Sci & Technol, Shouguang 262700, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xiao, Jiuhan,Jiang, Weiguo,Han, Dongyu,et al. Effect of the Spacial Dimensions on Solidification Defects in Rejoined Platform of Ni-Based Single-Crystal Superalloy Castings Under Different Withdrawal Rates[J]. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE,2021:12. |
| APA | Xiao, Jiuhan,Jiang, Weiguo,Han, Dongyu,Li, Kaiwen,Lu, Yuzhang,&Lou, Langhong.(2021).Effect of the Spacial Dimensions on Solidification Defects in Rejoined Platform of Ni-Based Single-Crystal Superalloy Castings Under Different Withdrawal Rates.METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE,12. |
| MLA | Xiao, Jiuhan,et al."Effect of the Spacial Dimensions on Solidification Defects in Rejoined Platform of Ni-Based Single-Crystal Superalloy Castings Under Different Withdrawal Rates".METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE (2021):12. |
入库方式： OAI收割
来源：金属研究所
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