Solidification Characteristic and Segregation Behavior of a New Nickel Base K4750 Alloy
文献类型：期刊论文
| 作者 | Yu Xun1,2; Wang Linlin1; Ou Meiqiong2; Ma Yingche2; Xin Qibin1; Liu Kui2 |
| 刊名 | RARE METAL MATERIALS AND ENGINEERING
 |
| 出版日期 | 2019-05-01 |
| 卷号 | 48期号:5页码:1488-1496 |
| 关键词 | element segregation Thermal-Calc calculation Ni-based superalloy |
| ISSN号 | 1002-185X |
| 通讯作者 | Ma Yingche(ycma@imr.ac.cn) |
| 英文摘要 | The solidification microstructures and elemental microsegregation behavior of a new Ni-base superalloy K4750 was comparatively investigated by differential thermal analysis (DTA), Thermo-Calc calculation and isothermal solidification quenching (ISQ) experiment. The results of ISQ indicate that the temperature of liquidus and solidus of K4750 alloy are 1350 degrees C and 1270 degrees C, respectively, and the precipitated temperature of MC carbide is 1320 degrees C. The temperature of liquidus obtained by DTA and Thermal-Calc is in close agreement with the result of ISQ, but the temperature of solidus obtained by DTA and Thermal-Calc are 1306 C and 1296 C, respectively. In the initial stage of the solidification process, the volume fraction of residual liquid decreases sharply. In solidification process within the temperature range of 1310 degrees C similar to 1290 degrees C, the residual liquid in the interdendritic region transforms from connected channels to isolated micro-liquid pools. In the last stage of solidification, these isolated micro-liquid pools are quite sluggish and result in the formation of porosity. The microsegregation coefficients of W, Fe and Cr are larger than 1, so they are considered to be negative segregation elements and segregate in solid. In contrast, the microsegregation coefficients of Ti, Nb, C and Mo are less than 1, and thus they are positive segregation elements and segregated in the liquid. |
| WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000470794300019 |
| 出版者 | NORTHWEST INST NONFERROUS METAL RESEARCH |
| 源URL | [http://ir.imr.ac.cn/handle/321006/133988]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Ma Yingche |
| 作者单位 | 1.Northeastern Univ, Shenyang 110819, Liaoning, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yu Xun,Wang Linlin,Ou Meiqiong,et al. Solidification Characteristic and Segregation Behavior of a New Nickel Base K4750 Alloy[J]. RARE METAL MATERIALS AND ENGINEERING,2019,48(5):1488-1496. |
| APA | Yu Xun,Wang Linlin,Ou Meiqiong,Ma Yingche,Xin Qibin,&Liu Kui.(2019).Solidification Characteristic and Segregation Behavior of a New Nickel Base K4750 Alloy.RARE METAL MATERIALS AND ENGINEERING,48(5),1488-1496. |
| MLA | Yu Xun,et al."Solidification Characteristic and Segregation Behavior of a New Nickel Base K4750 Alloy".RARE METAL MATERIALS AND ENGINEERING 48.5(2019):1488-1496. |
入库方式： OAI收割
来源：金属研究所
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