EFFECT OF Re AND W ON RECRYSTALLIZATION OF AS-CAST Ni-BASED SINGLE CRYSTAL SUPERALLOYS
文献类型：期刊论文
| 作者 | Pu Sheng1,4; Xie Guang3,4; Wang Li3,4; Pan Zhiyi2,3; Lou Langhong4 |
| 刊名 | ACTA METALLURGICA SINICA
 |
| 出版日期 | 2016-05-11 |
| 卷号 | 52期号:5页码:538-548 |
| 关键词 | Ni-based single crystal superalloy recrystallization eutectic Re W |
| ISSN号 | 0412-1961 |
| DOI | 10.11900/0412.1961.2015.00456 |
| 通讯作者 | Xie Guang(gxie@imr.ac.cn) |
| 英文摘要 | Ni-based single crystal (SX) superalloys have been used as blades in aero-space industry and land based applications due to their excellent high-temperature properties. However, residual strain is introduced into as cast SX superalloy blades during the manufacturing process, such as casting, grinding or shot peening, and so on. Recrystallization (RX) occurs easily during subsequent high temperature heat treatment. In previous work, it is believed that RX has detrimental effect on the mechanical properties of SX superalloy. Furthermore, in order to improve the mechanical properties, more and more refractory elements, such as W, Re, Mo, Ta, are added into SX superalloys. However, so far, few reports about the effect of refractory elements on the RX in as-cast SX superalloys have been available. In the present work, the effect of Re and W on the RX behavior of as-cast Ni-based SX superalloy was studied. Single crystal superalloys with different Re and W contents were annealed at 1230 similar to 1330 degrees C after indened using Brinell hardnesstester. It is found that RX grains form at the surface under indentation and grow preferentially along the dendritic cores. Subsequent growth of RX is impeded by the residual coarse gamma' and gamma+gamma' eutectics in the interdendritic regions. Both the volume fraction of gamma+gamma' eutectics and gamma' solvus temperature are increased with the addition of Re and W, which are attributed to the increase of RX threshold temperature. For all SX superalloys studied in this work, RX area increases with the increase of annealing temperature due to the dissolution of gamma' and gamma+gamma' eutectics. At the same annealing temperature, in comparison to Re, W shows more effect to inhibit RX growth. Additionally, SX superalloy containing both Re and W has the smallest RX area in the present experiments. |
| WOS研究方向 | Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000376471100004 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.imr.ac.cn/handle/321006/122242]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Xie Guang |
| 作者单位 | 1.Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China 2.Tsinghua Univ, Grad Sch Shenzhen, Shenzhen 518055, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 4.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Pu Sheng,Xie Guang,Wang Li,et al. EFFECT OF Re AND W ON RECRYSTALLIZATION OF AS-CAST Ni-BASED SINGLE CRYSTAL SUPERALLOYS[J]. ACTA METALLURGICA SINICA,2016,52(5):538-548. |
| APA | Pu Sheng,Xie Guang,Wang Li,Pan Zhiyi,&Lou Langhong.(2016).EFFECT OF Re AND W ON RECRYSTALLIZATION OF AS-CAST Ni-BASED SINGLE CRYSTAL SUPERALLOYS.ACTA METALLURGICA SINICA,52(5),538-548. |
| MLA | Pu Sheng,et al."EFFECT OF Re AND W ON RECRYSTALLIZATION OF AS-CAST Ni-BASED SINGLE CRYSTAL SUPERALLOYS".ACTA METALLURGICA SINICA 52.5(2016):538-548. |
入库方式： OAI收割
来源：金属研究所
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