Features of microstructure and mechanical characteristics of a laminated composite with high specific strength and moderate heat resistance


The work is devoted to the study of the formation of structure and mechanical characteristics of the laminated composites of the system Ti-Al and Ti-Al-Me with high specific strength and moderate heat resistance. The investigation of a microstructure of the composite sample showed that it consists of a solid solution of aluminum in titanium, zirconium, and intermetallic layers Ti3Al, TiAl, TiAl2 and TiAl3. Results of short-term tests on 3 point bending showed that the average values of tensile strength of alloy composites are at the level 820 MPa and 993 MPa, and the doped composite - 952 MPa and 1352 MPa at temperatures of 20 and 700 °C, respectively.