Influence of Post-Bond Heat Treatment on Microstructure and Creep Behavior of the Brazed Single-Crystal Nickel Superalloy

doi:10.3390/ma15124053

IMR OpenIR

	Influence of Post-Bond Heat Treatment on Microstructure and Creep Behavior of the Brazed Single-Crystal Nickel Superalloy
	Hou, Xingyu 1,2; Wang, Shiyang 2; Qiu, Keqiang 1; Sun, Yuan 2; Yang, Yanhong 2; Zhou, Yizhou 2
通讯作者	Wang, Shiyang(sywang16b@imr.ac.cn) ; Qiu, Keqiang(kqqiu@sut.edu.cn) ; Sun, Yuan(yuansun@imr.ac.cn)
	2022-06-01
发表期刊	MATERIALS
卷号	15 期号:12 页码:15
摘要	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.
关键词	single-crystal Ni superalloy brazing post-bond heat treatment (PBHT) microstructure creep life diffusion affected zone
资助者	Yanhong Yang
DOI	10.3390/ma15124053
收录类别	SCI
语种	英语
资助项目	Yanhong Yang[2021YFB3700401]
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering ; Physics
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Physics, Applied ; Physics, Condensed Matter
WOS记录号	WOS:000816609900001
出版者	MDPI
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/174949
专题	中国科学院金属研究所
通讯作者	Wang, Shiyang; Qiu, Keqiang; Sun, Yuan
作者单位	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
推荐引用方式 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.