Fabrication of TiB-Al1050 Composites with Improved Microstructural and Mechanical Properties by a Liquid Pressing Infiltration Process.

This study was conducted on titanium diboride (TiB) reinforced Al metal matrix composites (MMCs) with improved properties using a TiB and aluminum (Al) 1050 alloy. Al composites reinforced with fine TiB at volume ratios of more than 60% were successfully fabricated via the liquid pressing infiltration (LPI) process, which can be used to apply gas pressure at a high temperature. The microstructure of the TiB-Al composite fabricated at 1000 °C with pressurization of 10 bar for 1 h showed that molten Al effectively infiltrated into the high volume-fraction TiB preform due to the improved wettability and external gas pressurization.