Low-Temperature Brazing of Titanium Using Al-Based Filler Alloys

Table 6

Ti/Ti–Ti/Al-brazed joints using Al–Si-type filler alloys.

References	Materials				Conditions	Bonding		Shear strength (MPa)	Intermetallic compounds at Ti/filler interface
	Parent 1	Parent 2	Filler
			Type	Thickness/gap width ()		Temperature (°C)	Time (min)
[34]	CP-Ti	Al (1050)	Al–10Si–1Mg	100	Vacuum	620	25	84	,
[29]	Pure Ti	Pure Ti	Al–(0.1–10)Si	100	Vacuum	680	3	∼94 for Al–0.8Si	, ,
[28]	Pure Ti	Al (3003)	Al–10Si–0.5Mg	100	Vacuum	600	3	∼70	,
[3]	Ti Grade 5, 2	Ti Grade 5, 2	AWS BAlSi-4 (Al–12Si–0.8Fe)	80	Vacuum/torch with flux	600–620		74.2 G5 69.6 G2
[31]	OT4 titanium	OT4 titanium	Al–5.3Si–0.8Fe–0.3Cu–0.2Ti	100	Vacuum	685	3	56	Continuous silicide
[89]	Ti Grade 5	Al (6060)	Al–8.4Si–20Cu–10Ge–0.1Re	200	Vacuum + argon	530	10/30/60	49/55/48
			Al–8.4Si–20Cu–10Ge			530	10/30/60	23/17/20
[35]	Ti50–Al50	Ti50–Al50	BAlSi-4 (Al–(11–13)Si–0.3Cu–0.1Mg–0.2Zn–0.15Mn–0.8Fe)	75	Vacuum	900	3	86.2	+ ( for longer brazing time)
[84]	Ti Grade 2/Grade 12	Tit Grade 2/Grade 12	TiBraze Al-642 (Al–5.3Si–0.8Fe–0.2Ti)	<25	EB + vacuum	>melting point	0.5–0.75
[39]	Ti Grade 5	Al1060	Al–12Si		Ultrasound-assisted brazing in air	620	4 sec USV + holding of 15 or 5 min + 4 or 0 sec USV	∼68	,

Transient liquid phase bonding. For Al–0.1Si/3 min, only was observed. Very weak diffraction line was observed for . Infrared brazing .