Effects of nitrogen content on microstructures and tensile properties of a new Ni-Fe based wrought superalloy
文献类型：期刊论文
| 作者 | Liu, Peng2,3; Zhang, Rui2; Yuan, Yong1; Cui, Chuanyong2; Liang, Faguang1; Liu, Xi1; Gu, Yuefeng1; Zhou, Yizhou2; Sun, Xiaofeng2 |
| 刊名 | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
 |
| 出版日期 | 2021-01-13 |
| 卷号 | 801页码:10 |
| 关键词 | Ni-Fe based wrought superalloy Nitrogen Microstructure Tensile property Deformation mechanism |
| ISSN号 | 0921-5093 |
| DOI | 10.1016/j.msea.2020.140436 |
| 通讯作者 | Zhang, Rui(rzhang@imr.ac.cn) ; Cui, Chuanyong(chycui@imr.ac.cn) |
| 英文摘要 | The influence of the nitrogen (N) content (0.0013-0.034 wt%) on the microstructures and 750 ?C tensile properties of a newly developed Ni-Fe based wrought superalloy (named as HT700T alloy) for ultra-supercritical power plant applications beyond 700 ?C was investigated using scanning electron microscopy (SEM), electron backscatter diffraction (EBSD) and transmission electron microscopy (TEM) techniques. The results show that the increase in the N content promotes the morphological transformation of the intergranular Cr23C6 carbides from semi-continuous rods to discrete granular particles, and leads to the decrease of the amount of the Cr23C6 carbides. Meanwhile, the increase in the N content promotes the formation of the MX phase and the MX phase more preferentially forms at the grain boundary. The N content has no obvious effects on the morphology of the gamma ' phase, but slightly decreases the gamma ' fraction. The average grain size continuously decreases with the increase of N content and the proportion of low Sigma coincident site lattice (CSL) boundary significantly increases at the 0.0077% N content. The 750 degrees C tensile properties show that the increase of N content has little effect on the yield and tensile strength of the alloy, while the ductility increases remarkably. A mixture fracture mode of intergranular and transgranular occurs in all samples regardless of the N content. The dominant deformation mechanism is gamma ' bypassing via Orowan looping regardless of the N content, while deformation microtwinning and stacking faults shearing the gamma ' precipitates are confirmed to be the assistant deformation mechanisms at the 0.0077% N content. |
| 资助项目 | National Natural Science Foundation of China[51671189] ; Ministry of Science and Technology of China[2017YFA0700703] ; Ministry of Science and Technology of China[2019YFA0705304] |
| WOS研究方向 | Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000600959500003 |
| 出版者 | ELSEVIER SCIENCE SA |
| 资助机构 | National Natural Science Foundation of China ; Ministry of Science and Technology of China |
| 源URL | [http://ir.imr.ac.cn/handle/321006/158798]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Zhang, Rui; Cui, Chuanyong |
| 作者单位 | 1.Xian Thermal Power Res Inst Co Ltd, Xian 710032, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 3.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Peng,Zhang, Rui,Yuan, Yong,et al. Effects of nitrogen content on microstructures and tensile properties of a new Ni-Fe based wrought superalloy[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2021,801:10. |
| APA | Liu, Peng.,Zhang, Rui.,Yuan, Yong.,Cui, Chuanyong.,Liang, Faguang.,...&Sun, Xiaofeng.(2021).Effects of nitrogen content on microstructures and tensile properties of a new Ni-Fe based wrought superalloy.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,801,10. |
| MLA | Liu, Peng,et al."Effects of nitrogen content on microstructures and tensile properties of a new Ni-Fe based wrought superalloy".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 801(2021):10. |
入库方式： OAI收割
来源：金属研究所
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