The effects of grain boundary structure and bulk Cr content on grain boundary degradation behavior of Ni-Cr binary alloys in high temperature CO2
文献类型：期刊论文
| 作者 | Yang, Liujie1; Qian, Hongchen1; Hao, Xianchao2,3; Kuang, Wenjun1 |
| 刊名 | ACTA MATERIALIA
 |
| 出版日期 | 2024-01-15 |
| 卷号 | 263页码:15 |
| 关键词 | Nickel alloy SEM Grain boundary diffusion Preferential oxidation Grain boundary migration |
| ISSN号 | 1359-6454 |
| DOI | 10.1016/j.actamat.2023.119496 |
| 通讯作者 | Kuang, Wenjun(wjkuang66@gmail.com) |
| 英文摘要 | The effects of grain boundary (GB) structure and bulk Cr content (from 15 wt.% to 30 wt.%) on GB oxidation behavior of Ni-Cr binary alloys were investigated in 650 degrees C/1atm CO2 gas. The degradation behaviors of GBs, which varies greatly (including preferential intergranular oxidation, general intergranular oxidation and GB passivation), is dictated by the available Cr source which depends on the bulk Cr content and the Cr diffusion flux to the reaction front. The Cr diffusivity along GB is dependent on GB structure and decreases in the order of random high angle GB (RHAB), low angle GB (LAGB), incoherent twin boundary (ITB) and coherent twin boundary (CTB). Interestingly, other coincident site lattice boundary (CSLB (Sigma>3)) shows a Cr diffusivity between ITB and CTB. More importantly, the threshold bulk Cr content for achieving GB passivation is also closely related to GB structure. To be specific, LAGB completely passivates when the bulk Cr content is between 20 wt.% and 25 wt.%, while ITB completely passivates at a bulk Cr content of 25 wt.% and CSLB (Sigma>3) completely passivates when the bulk Cr content is between 25 wt.% and 30 wt.%. In contrast, CTB is subject to general intergranular oxidation while RHAB shows passivation regardless of the bulk Cr content. |
| 资助项目 | National Natural Science Foundation[52271068] ; Development Program of the Ministry of Science and Technology of China[2019YFA0209900] ; Young Talent Support Plan of Xi'an Jiaotong University |
| WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001116650300001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 资助机构 | National Natural Science Foundation ; Development Program of the Ministry of Science and Technology of China ; Young Talent Support Plan of Xi'an Jiaotong University |
| 源URL | [http://ir.imr.ac.cn/handle/321006/177135]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Kuang, Wenjun |
| 作者单位 | 1.Xi An Jiao Tong Univ, Ctr Adv Mat Performance Nanoscale CAMP Nano, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China 2.Chinese Acad Sci, CAS Key Lab Nucl Mat & Safety Assessment, Inst Met Res, Shenyang 110016, 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 | Yang, Liujie,Qian, Hongchen,Hao, Xianchao,et al. The effects of grain boundary structure and bulk Cr content on grain boundary degradation behavior of Ni-Cr binary alloys in high temperature CO2[J]. ACTA MATERIALIA,2024,263:15. |
| APA | Yang, Liujie,Qian, Hongchen,Hao, Xianchao,&Kuang, Wenjun.(2024).The effects of grain boundary structure and bulk Cr content on grain boundary degradation behavior of Ni-Cr binary alloys in high temperature CO2.ACTA MATERIALIA,263,15. |
| MLA | Yang, Liujie,et al."The effects of grain boundary structure and bulk Cr content on grain boundary degradation behavior of Ni-Cr binary alloys in high temperature CO2".ACTA MATERIALIA 263(2024):15. |
入库方式： OAI收割
来源：金属研究所
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