Microstructure and mechanical properties of novel Ni-Cr-Co-based superalloy GTAW joints
文献类型：期刊论文
| 作者 | Song, Jiazhe1; Chen, Yuhua1; Hao, Xianchao2; Wang, Min2; Ma, Yingche2; Xie, Jilin1 |
| 刊名 | JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
 |
| 出版日期 | 2024-03-01 |
| 卷号 | 29页码:2758-2767 |
| 关键词 | New cast superalloy GTAW Microstructures Mechanical properties |
| ISSN号 | 2238-7854 |
| DOI | 10.1016/j.jmrt.2024.01.241 |
| 通讯作者 | Chen, Yuhua(ch.yu.hu@163.com) |
| 英文摘要 | Recently, a novel Ni-Cr-Co-based superalloy has been developed in China, exhibiting exceptional overall characteristics such as favorable mechanical properties at 800 degrees C, resistance to corrosion and oxidation, as well as remarkable welding capabilities. In this paper, the welding sample of the novel superalloy was prepared using the gas tungsten arc welding (GTAW) method. The conclusion indicates that the GTAW technique can be utilized to fabricate high-quality weld joints filled with superalloy wire. A segregation phenomenon exists between the core and boundary of the dendrite in the fusion zone. The interface of the joints is effectively fused without any separate area. There is an abundance of co-crystallization occurring between the weld metal and the base metal. Besides, the joint has been tested at room temperature (20 degrees C) and high temperature (800 degrees C) for its ultimate tensile strength (UTS). The UTS of the joint is 11780 MPa and 781Mpa at 20 degrees C and 800 degrees C, respectively. Moreover, the positions of the fractures in the two cases are different. At 20 degrees C, the fracture location is in the base metal, while at 800 degrees C, the fracture location is inside the fusion zone. The SEM analysis of the fracture indicates that at 20 degrees C, the joint's tensile fracture surface exhibits transparent mixed fracture mode, and there are numerous small dimples; at 800 degrees C, the dimple on the fracture surface of the joint disappeared, replaced by the feature of smooth fracture along the dendrites. |
| 资助项目 | National Natural Science Foundation of China[52105355] ; Science and Technology Cooperation Special Project of Jiangxi Province[22025BCJ23017] ; National Science and Technology Major Project[J2019 -VI -0004-0118] ; Postgraduate Innovation Special Fund Project of Nanchang Hang-kong University[YC2022-022] |
| WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001185886100001 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China ; Science and Technology Cooperation Special Project of Jiangxi Province ; National Science and Technology Major Project ; Postgraduate Innovation Special Fund Project of Nanchang Hang-kong University |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Chen, Yuhua |
| 作者单位 | 1.Nanchang Hangkong Univ, Jiangxi Key Lab Forming & Joining Technol Aerosp C, Nanchang 330036, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Song, Jiazhe,Chen, Yuhua,Hao, Xianchao,et al. Microstructure and mechanical properties of novel Ni-Cr-Co-based superalloy GTAW joints[J]. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,2024,29:2758-2767. |
| APA | Song, Jiazhe,Chen, Yuhua,Hao, Xianchao,Wang, Min,Ma, Yingche,&Xie, Jilin.(2024).Microstructure and mechanical properties of novel Ni-Cr-Co-based superalloy GTAW joints.JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,29,2758-2767. |
| MLA | Song, Jiazhe,et al."Microstructure and mechanical properties of novel Ni-Cr-Co-based superalloy GTAW joints".JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T 29(2024):2758-2767. |
入库方式： OAI收割
来源：金属研究所
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