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

IMR OpenIR

	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.
	2017-12-01
发表期刊	ELSEVIER SCI LTD
ISSN	0966-9795
卷号	91 页码:35-44
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.
部门归属	[cai, y. s. ; liu, r. c. ; zhu, z. w. ; cui, y. y. ; yang, r.] chinese acad sci, inst met res, 72 wenhua rd, shenyang 110016, liaoning, peoples r china ; [cai, y. s.] univ chinese acad sci, beijing 100049, peoples r china
关键词	Vacuum Brazing Titanium Aluminide Microstructure Bonding Strength Test Amorphous Ti-37.5zr-15cu-15ni Brazing Alloy
学科领域	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/78964
专题	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.