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

Table 4

Ti/Ti–Ti/Al-brazed joints using pure or low-alloyed Al fillers.

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)
[29]	Pure Ti	Pure Ti	Pure Al	100	Vacuum	680	3	∼92
						680	10	∼42
			Al–0.8Si			680	3	∼94
						680	10	∼75
[31]	OT4 titanium	OT4 titanium	AD1 (Al–0.4Si–0.3Fe)	60	Vacuum	685	3	76
Cited in [2]	Ti Grade 5	Ti Grade 5	Al–0.3Si–0.8Fe–0.2Mg			>660		72
[35]	Ti50–Al50	Ti50–Al50	Pure aluminum	75	Vacuum	900	0.5	Very weak joint

The shear strength values calculated according to Figure 11 in [29]. Infrared brazing , preheating in 400°C for 60 s.