Vacuum brazing TiAl-based intermetallics using novel Ti-Fe-Mn eutectic brazing alloy

doi:10.1016/j.intermet.2021.107274

IMR OpenIR

	Vacuum brazing TiAl-based intermetallics using novel Ti-Fe-Mn eutectic brazing alloy
	Cai, Y. S.; Liu, R. C.; Ji, H. B.; Cui, Y. Y.; Yang, R.
通讯作者	Cai, Y. S.(yscai@imr.ac.cn)
	2021-09-01
发表期刊	INTERMETALLICS
ISSN	0966-9795
卷号	136 页码:13
摘要	Ti-22Fe-23Mn(at.%) eutectic brazing alloy ribbon fabricated by vacuum arc remelting and rapid solidification as filler metal used to vacuum braze Ti-45Al-2Mn-2Nb-1B(at.%) alloy. The effects of brazing temperature and time on the interfacial microstructure and joining properties were investigated in detail. The microstructure of the Ti-20Fe-21Mn brazing alloy presented excellent diffusion ability, and the brazed joints mainly consisted of alpha 2/gamma lamellar phase, single alpha 2 phase, B2 phase, and boride. The brazed joint's tensile strength first increased and then decreased with the brazing temperature in the range of 1170 degrees C-1250 degrees C, and the holding time varied from 5 min to 60 min. The highest tensile strength at room temperature was 540 MPa when the joint brazed at 1230 degrees C for 45 min. The high-temperature tensile strength first increased and then decreased with the testing temperature. The high-temperature tensile strength of Ti-22Fe-23Mn(at.%) alloy was superior to Ti-Zr-Cu-Ni (at.%) alloy. The high-temperature tensile strength was lower than 45XD alloy below 850 degrees C. However, the tensile strength was closer to 45XD alloy when the testing temperature varied from 900 degrees C to 1000 degrees C. All the cracks nucleated and propagated in the poor boride zone, and the fracture surfaces presented typical brittle cleavage fracture characteristics.
关键词	Vacuum brazing Titanium aluminide Microstructure Tensile strength Ti-20Fe-21Mn eutectic brazing alloy
DOI	10.1016/j.intermet.2021.107274
收录类别	SCI
语种	英语
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000696700700004
出版者	ELSEVIER SCI LTD
引用统计	被引频次：3[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/321006/166990
专题	中国科学院金属研究所
通讯作者	Cai, Y. S.
作者单位	Chinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Cai, Y. S.,Liu, R. C.,Ji, H. B.,et al. Vacuum brazing TiAl-based intermetallics using novel Ti-Fe-Mn eutectic brazing alloy[J]. INTERMETALLICS,2021,136:13.
APA	Cai, Y. S.,Liu, R. C.,Ji, H. B.,Cui, Y. Y.,&Yang, R..(2021).Vacuum brazing TiAl-based intermetallics using novel Ti-Fe-Mn eutectic brazing alloy.INTERMETALLICS,136,13.
MLA	Cai, Y. S.,et al."Vacuum brazing TiAl-based intermetallics using novel Ti-Fe-Mn eutectic brazing alloy".INTERMETALLICS 136(2021):13.