Effect of brazing temperature and brazing time on the microstructure and tensile strength of TiAl-based alloy joints with Ti-Zr-Cu-Ni amorphous alloy as filler metal

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	Effect of brazing temperature and brazing time on the microstructure and tensile strength of TiAl-based alloy joints with Ti-Zr-Cu-Ni amorphous alloy as filler metal
	Cai, Y. S.; Liu, R. C.; Zhu, Z. W.; Cui, Y. Y.; Yang, R.; Cui, YY (reprint author), Chinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China.
刊名	ELSEVIER SCI LTD
	2017-12-01
卷号	91 页码:35-44
关键词	Vacuum Brazing Titanium Aluminide Microstructure Bonding Strength Test Amorphous Ti-37.5zr-15cu-15ni Brazing Alloy
ISSN号	0966-9795
英文摘要	An amorphous Ti-37.5Zr-15Cu-15Ni (wt.%) ribbon fabricated by vacuum arc remelting and rapid solidification was used as filler metal to vacuum braze TiAI alloy (Ti-45A1-2Mn-2Nb-1B (at.%)). The effects of brazing temperature and time on the microstructure and strength of the joints were investigated in details. The typical brazed joint major consisted of three zones and the brazed joints mainly consisted of alpha 2Ti3Al phase, alpha-Ti phase and (Ti, Zr)(2)(Cu, Ni) phase. When the brazing temperature varied from 910 degrees C to 1010 degrees C for 30 min, the tensile strength of the joint first increased and then decreased. With increasing the brazing time, the tensile strength of the joint increased. The maximum room temperature tensile strength was 468 MPa when the specimen was brazed at 930 degrees C for 60 min. All the fracture surfaces assumed typical brittle cleavage fracture characteristic. The fracture path varied with the brazing parameter and cracks preferred to initiate at (Ti, Zr)(2)(Cu, Ni) phase and propagation path were mainly determined by the content and distribution of alpha-Ti phase and (Ti, Zr)(2)(Cu, Ni) phase.; An amorphous Ti-37.5Zr-15Cu-15Ni (wt.%) ribbon fabricated by vacuum arc remelting and rapid solidification was used as filler metal to vacuum braze TiAI alloy (Ti-45A1-2Mn-2Nb-1B (at.%)). The effects of brazing temperature and time on the microstructure and strength of the joints were investigated in details. The typical brazed joint major consisted of three zones and the brazed joints mainly consisted of alpha 2Ti3Al phase, alpha-Ti phase and (Ti, Zr)(2)(Cu, Ni) phase. When the brazing temperature varied from 910 degrees C to 1010 degrees C for 30 min, the tensile strength of the joint first increased and then decreased. With increasing the brazing time, the tensile strength of the joint increased. The maximum room temperature tensile strength was 468 MPa when the specimen was brazed at 930 degrees C for 60 min. All the fracture surfaces assumed typical brittle cleavage fracture characteristic. The fracture path varied with the brazing parameter and cracks preferred to initiate at (Ti, Zr)(2)(Cu, Ni) phase and propagation path were mainly determined by the content and distribution of alpha-Ti phase and (Ti, Zr)(2)(Cu, Ni) phase.
学科主题	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
语种	英语
公开日期	2018-01-10
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/78964]
专题	金属研究所_中国科学院金属研究所
通讯作者	Cui, YY (reprint author), Chinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China.
推荐引用方式 GB/T 7714	Cai, Y. S.,Liu, R. C.,Zhu, Z. W.,et al. Effect of brazing temperature and brazing time on the microstructure and tensile strength of TiAl-based alloy joints with Ti-Zr-Cu-Ni amorphous alloy as filler metal[J]. ELSEVIER SCI LTD,2017,91:35-44.
APA	Cai, Y. S.,Liu, R. C.,Zhu, Z. W.,Cui, Y. Y.,Yang, R.,&Cui, YY .(2017).Effect of brazing temperature and brazing time on the microstructure and tensile strength of TiAl-based alloy joints with Ti-Zr-Cu-Ni amorphous alloy as filler metal.ELSEVIER SCI LTD,91,35-44.
MLA	Cai, Y. S.,et al."Effect of brazing temperature and brazing time on the microstructure and tensile strength of TiAl-based alloy joints with Ti-Zr-Cu-Ni amorphous alloy as filler metal".ELSEVIER SCI LTD 91(2017):35-44.