Effects of Boron Addition on the Microstructure and Mechanical Properties of γ′-Strengthened Directionally Solidified CoNi-Base Superalloy

doi:10.1007/s40195-024-01715-y

IMR OpenIR

	Effects of Boron Addition on the Microstructure and Mechanical Properties of γ′-Strengthened Directionally Solidified CoNi-Base Superalloy
	Qu, Shasha 1,2; Li, Yingju 1; Lu, Bingyu 1; Wang, Cuiping 3,4; Yang, Yuansheng 1
通讯作者	Li, Yingju(yjli@imr.ac.cn) ; Yang, Yuansheng(ysyang@imr.ac.cn)
	2024-06-13
发表期刊	ACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN	1006-7191
页码	15
摘要	The effects of B addition on microstructure and mechanical properties of a gamma '-strengthened CoNi-base superalloy are investigated. The addition of B leads to a substantial increase in the volume fraction of both the eutectic structure and borides. The CoNi-base alloy shows a high solubility limit for the element B. Borides become noticeable in the area surrounding the eutectic structure after the B level exceeds 0.46 at.%. It is found that the compression property and stress rupture life of the 4W2Ta alloys exhibit an initial rise followed by a subsequent drop as the B content gradually increases from 0.08 to 0.78 at.%. The 4W2Ta0.46B alloy demonstrates the most excellent high-temperature strength and stress rupture life, revealing that a moderate amount of B in the alloy noticeably enhances its mechanical properties by enhancing the grain boundary cohesion.
关键词	CoNi-base superalloy Borides Grain boundary Microstructure Mechanical properties
资助者	National Natural Science Foundation of China
DOI	10.1007/s40195-024-01715-y
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51831007]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001246015300001
出版者	CHINESE ACAD SCIENCES, INST METAL RESEARCH
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/187085
专题	中国科学院金属研究所
通讯作者	Li, Yingju; Yang, Yuansheng
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Guangdong Inst Special Equipment Inspect & Res, Foshan 528251, Peoples R China 3.Xiamen Univ, Coll Mat, Xiamen 361005, Peoples R China 4.Xiamen Univ, Fujian Prov Key Lab Mat Genome, Xiamen, Peoples R China
推荐引用方式 GB/T 7714	Qu, Shasha,Li, Yingju,Lu, Bingyu,等. Effects of Boron Addition on the Microstructure and Mechanical Properties of γ′-Strengthened Directionally Solidified CoNi-Base Superalloy[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2024:15.
APA	Qu, Shasha,Li, Yingju,Lu, Bingyu,Wang, Cuiping,&Yang, Yuansheng.(2024).Effects of Boron Addition on the Microstructure and Mechanical Properties of γ′-Strengthened Directionally Solidified CoNi-Base Superalloy.ACTA METALLURGICA SINICA-ENGLISH LETTERS,15.
MLA	Qu, Shasha,et al."Effects of Boron Addition on the Microstructure and Mechanical Properties of γ′-Strengthened Directionally Solidified CoNi-Base Superalloy".ACTA METALLURGICA SINICA-ENGLISH LETTERS (2024):15.