A novel Zr-based Zr47Ti29Ni21V3 amorphous brazing filler metal for high toughness and strength joining of Ti6Al4V alloy

被引:1
作者
Bai, Xueyin [1 ]
Li, Huyang [1 ]
Xiao, Wenlong [1 ]
Pang, Shujie [1 ]
Meng, Yang [1 ]
Guo, Wei [2 ]
Xiong, Huaping [3 ]
Zhang, Tao [1 ]
机构
[1] Beihang Univ, Sch Mat Sci & Engn, Key Lab Aerosp Mat & Performance, Minist Educ, Beijing 100191, Peoples R China
[2] Beihang Univ, Sch Mech Engn & Automat, Beijing 100191, Peoples R China
[3] Beijing Inst Aeronaut Mat, Welding & Plast Forming Div, Beijing 100095, Peoples R China
关键词
Amorphous metals; Brazing; Microstructure; Mechanical properties; TITANIUM/STEEL JOINT; SUPERCOOLED LIQUID; ATOMIC SIZE; TI; STABILITY; GLASS;
D O I
10.1016/j.intermet.2023.108155
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
In order to achieve the combination of high impact toughness and strength of brazed titanium alloy joints, a novel Cu-free Zr47Ti29Ni21V3 (at%) alloy with good glass-forming ability was developed and synthesized as a brazing filler metal (BFM) in a ribbon form by melt-spinning. Significantly different from the Ti6Al4V joints obtained by using the conventional Ti-13Zr-21Cu-9Ni BFM, the joint brazed with the present amorphous Zrbased BFM at 1233 K for 30 min consisted of a uniform alpha-Ti+beta-Ti lamellar colony microstructure without a fusion line. The resultant joint exhibited superior impact toughness (-21.3 J/cm2) and tensile shear strength (-441 MPa) compared with the joint brazed with the Ti-13Zr-21Cu-9Ni BFM (-3.4 J/cm2 and -292 MPa). The good mechanical properties of the present Ti6Al4V joint are attributed to the formation of the uniform microstructure as well as the reduction of intermetallic compounds in the braze zone by using the novel Zr-Ti-Ni-V amorphous BFM.
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页数:7
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