Laser Beam Welding of a Ti-15Mo/TiB Metal–Matrix Composite

A Ti-15Mo/TiB metal–matrix composite was produced by spark plasma sintering at 1400 °C. The fractions of the elements in initial powder mixture were 80.75 wt.% Ti, 14.25 Mo, and 5 TiB2. structure synthesized composed bcc β titanium matrix needle-like TiB reinforcements with an average thickness 500 ± 300 nm. Microstructure mechanical properties studied after laser beam welding (LBW) carried out room temperature or various pre-heating temperatures: 200, 400, 600 quality welded joints not found to be dependent noticeably on temperature; all welds consisted pores size which reached 200–300 µm. In contrast acicular individual particles base material, whiskers weld zone have a form bunches. maximum microhardness (~700 HV) obtained 200 °C; this value ~200 HV higher than that material.