Tailoring microstructure and mechanical performance of Hastelloy N-Hastelloy N superalloy joint through modifying brazing processing parameters and post thermal exposure
文献类型：期刊论文
| 作者 | He, Yanming1; Xiao, Fan1; Sun, Yuan2; Lu, Chuanyang1,3; Chen, Shuanjian4; Chen, Weijian1; Li, Huaxin1; Zheng, Wenjian1; Ma, Yinghe1; Ding, Zhenyu1 |
| 刊名 | MATERIALS CHARACTERIZATION
 |
| 出版日期 | 2021-03-01 |
| 卷号 | 173页码:14 |
| 关键词 | Hastelloy N superalloy Brazing Thermal exposure Microstructure Mechanical characterization |
| ISSN号 | 1044-5803 |
| DOI | 10.1016/j.matchar.2021.110947 |
| 通讯作者 | Lu, Chuanyang(cylv@zjut.edu.cn) ; Chen, Shuanjian(chenshuangjian@sinap.ac.cn) |
| 英文摘要 | In this work, the Hastelloy N superalloy was joined using a newly-designed BNiCrWBSi brazing filler alloy. Effects of brazing processing parameters and post thermal exposure on microstructure and mechanical performance of the joints were evaluated. The microstructure in the joints was revealed with the aid of scanning electron microscope, electron back-scattered diffraction and transmission electron microscope analyses. The nano indentation technique and shear test were employed to appraise the mechanical properties (such as nano scale elastic modulus/hardness of specific phases and joint bond strength) of the joints. The results showed that the typical joint constitution could be depicted as Hastelloy N alloy/diffusion-affected zone (DAZ) or finegrained zone (FGZ)/isothermal solidification zone (ISZ)/diffusion-affected zone (DAZ) or fine-grained zone (FGZ)/Hastelloy N alloy. The appearance of the FGZ was dependent on the brazing temperature, irrespective of the soaking time. The optimum joint bond strength of 588.9 MPa was produced at 1240 degrees C for 10 min. The typical fracture procedure and mechanism were discussed based on the detailed microstructural examinations and theoretical calculations. Apart from the brazing processing parameters, the post thermal exposure could also modify the microstructure through importing tiny boride phases into the ISZ, posing a reduction in shear strength. The microstructural evolution of Hastelloy N alloy joints unveiled and relationship built between the microstructure and mechanical properties will give a significant guidance for the design and application of the superalloy brazed joint. |
| 资助项目 | National MCF Energy RD Program[2019YFE03100400] ; National Natural Science Foundation of China[51705457] ; National Natural Science Foundation of China[51975530] ; National Natural Science Foundation of China[52005445] ; Natural Science Foundation of Zhejiang Province[LQ21E050015] |
| WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000626405400001 |
| 出版者 | ELSEVIER SCIENCE INC |
| 资助机构 | National MCF Energy RD Program ; National Natural Science Foundation of China ; Natural Science Foundation of Zhejiang Province |
| 源URL | [http://ir.imr.ac.cn/handle/321006/161644]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Lu, Chuanyang; Chen, Shuanjian |
| 作者单位 | 1.Zhejiang Univ Technol, Inst Proc Equipment & Control Engn, Hangzhou 310014, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Dept Superalloy, Shenyang 110016, Peoples R China 3.East China Univ Sci & Technol, Key Lab Pressure Syst & Safety, Minist Educ, Shanghai 200237, Peoples R China 4.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China |
| 推荐引用方式 GB/T 7714 | He, Yanming,Xiao, Fan,Sun, Yuan,et al. Tailoring microstructure and mechanical performance of Hastelloy N-Hastelloy N superalloy joint through modifying brazing processing parameters and post thermal exposure[J]. MATERIALS CHARACTERIZATION,2021,173:14. |
| APA | He, Yanming.,Xiao, Fan.,Sun, Yuan.,Lu, Chuanyang.,Chen, Shuanjian.,...&Gao, Zengliang.(2021).Tailoring microstructure and mechanical performance of Hastelloy N-Hastelloy N superalloy joint through modifying brazing processing parameters and post thermal exposure.MATERIALS CHARACTERIZATION,173,14. |
| MLA | He, Yanming,et al."Tailoring microstructure and mechanical performance of Hastelloy N-Hastelloy N superalloy joint through modifying brazing processing parameters and post thermal exposure".MATERIALS CHARACTERIZATION 173(2021):14. |
入库方式： OAI收割
来源：金属研究所
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