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

Table 7

Ti/Ti–Ti/Al-brazed joints using Al–Cu-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)
[29]	Pure Ti	Pure Ti	Al–1Cu	100	Vacuum	680	3
[28]	Pure Ti	Al (3003)	Al–10Cu–8Sn	100	Vacuum	615	5	∼38
[29]	Pure Ti	Al (3003)	Al–33Cu	100	Vacuum	630	3
[30]	Ti Grade 5, 2	Ti Grade 5, 2	TiBraze Al-635 (Al–4.2Cu–1.5Mg–0.5Si)	300	Vacuum/torch with flux	>638 liquidus temperature		140 in vacuum and 88 by the torch	, larger on Grade 5
[3]	Ti Grade 5, 2	Ti Grade 5, 2	TiBraze Al-635 (Al–4.2Cu–1.5Mg–0.5Si)	200	Vacuum/torch with flux	660–700		140.7 G5 100.8 G2	, larger on Grade 5
			Al–25Cu–9Si	100		580–620		88.6 G5 34.1 G2
	Ti Grade 2	Ti Grade 2	Al–24Cu–8.6Si–3.5Sn	150		580–620		47.7
(Cited in [2])	Ti6Al4V	Ti6Al4V	Al–33Cu	6–20	Air	550		25
[55]	Ti Grade 5	Al (6061)	Al–9.4Si–10Zn–10Cu–2Ni	∼200	Ultrasound-assisted induction brazing in air	560	4 sec USV + 60 min + 4 sec USV	∼43
			Al–15Sn–8.2Si–8.5Zn–8.5Cu–1.7Ni				4 sec USV + 15 min + 4 sec USV	∼76
[40]	Ti-5 (95%)	Ti-5 (95%)	Al–8.54Cu–1.35Ni–0.08Ti	100	By applying pressure/in air	647	13	74.78
			Al–6.44Cu–1.96Ni–0.92Ti			648	9	73.66

Very weak diffraction line was observed for .