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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.
Corresponding AuthorCai, Y. S.(yscai@imr.ac.cn)
2021-09-01
Source PublicationINTERMETALLICS
ISSN0966-9795
Volume136Pages:13
AbstractTi-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.
KeywordVacuum brazing Titanium aluminide Microstructure Tensile strength Ti-20Fe-21Mn eutectic brazing alloy
DOI10.1016/j.intermet.2021.107274
Indexed BySCI
Language英语
WOS Research AreaChemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000696700700004
PublisherELSEVIER SCI LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/166990
Collection中国科学院金属研究所
Corresponding AuthorCai, Y. S.
AffiliationChinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China
Recommended Citation
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.
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