| Influence of Post-Bond Heat Treatment on Microstructure and Creep Behavior of the Brazed Single-Crystal Nickel Superalloy | |
| Hou, Xingyu1,2; Wang, Shiyang2; Qiu, Keqiang1; Sun, Yuan2; Yang, Yanhong2; Zhou, Yizhou2 | |
| Corresponding Author | Wang, Shiyang(sywang16b@imr.ac.cn) ; Qiu, Keqiang(kqqiu@sut.edu.cn) ; Sun, Yuan(yuansun@imr.ac.cn) |
| 2022-06-01 | |
| Source Publication | MATERIALS
 |
| Volume | 15Issue:12Pages:15 |
| Abstract | Post-bond heat treatment (PBHT) is an effective way to improve the bonding quality of a brazed joint. Herein, brazing of a nickel-based single crystal superalloy is carried out using a Ni-Cr-Co-B-Si-Al-Ti-W-Mo filler alloy, and the microstructure and creep property of the brazed joint are systematically investigated using scanning electron microscopy (SEM), Thermo-Calc software, an electron probe micro-analyzer (EPMA), X-ray diffractometer, confocal scanning laser microscope (CSLM), and transmission electron microscopy (TEM). The results reveal that the as-prepared joint only consists of an isothermally solidified zone (ISZ) and an athermally solidified zone (ASZ), where the cubic gamma ' phase is observed in the ISZ, and skeleton-like M3B2, gamma + gamma ' eutectic and reticular G phases are observed in the ASZ. Furthermore, the gamma + gamma ' eutectic and G phases disappear and the M3B2 alters from a skeleton-like to block-like shape in the ASZ after PBHT. Meanwhile, some lath-like M3B2 phases are precipitated at the edge of the ISZ and several M3B2 phases are precipitated in the base metal, forming a new zone in the brazed joint, namely at the diffusion affected zone (DAZ). Owing to the removal of low melting point eutectics from the as-prepared joint, the creep life also increases from 188 h to 243 h after PBHT. The current work provides a method for the optimization of brazed joints based on the Ni-based single crystal superalloy. |
| Keyword | single-crystal Ni superalloy brazing post-bond heat treatment (PBHT) microstructure creep life diffusion affected zone |
| Funding Organization | Yanhong Yang |
| DOI | 10.3390/ma15124053 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | Yanhong Yang[2021YFB3700401] |
| WOS Research Area | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering ; Physics |
| WOS Subject | Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Physics, Applied ; Physics, Condensed Matter |
| WOS ID | WOS:000816609900001 |
| Publisher | MDPI |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/174946 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Wang, Shiyang; Qiu, Keqiang; Sun, Yuan |
| Affiliation | 1.Shenyang Univ Technol, Sch Mat Sci & Engn, Shenyang 110023, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China |
| Recommended Citation GB/T 7714 | Hou, Xingyu,Wang, Shiyang,Qiu, Keqiang,et al. Influence of Post-Bond Heat Treatment on Microstructure and Creep Behavior of the Brazed Single-Crystal Nickel Superalloy[J]. MATERIALS,2022,15(12):15. |
| APA | Hou, Xingyu,Wang, Shiyang,Qiu, Keqiang,Sun, Yuan,Yang, Yanhong,&Zhou, Yizhou.(2022).Influence of Post-Bond Heat Treatment on Microstructure and Creep Behavior of the Brazed Single-Crystal Nickel Superalloy.MATERIALS,15(12),15. |
| MLA | Hou, Xingyu,et al."Influence of Post-Bond Heat Treatment on Microstructure and Creep Behavior of the Brazed Single-Crystal Nickel Superalloy".MATERIALS 15.12(2022):15. |
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