Cold Uniaxial Deformation of Powder Materials Based on Ti-B/Ti-Al-Nb-Mo-B

Regularities of cold uniaxial deformation of powder materials consisting of Ti-B and Ti-Al-Nb-Mo-B layers are established based on a rheological approach. The composition TiB-Ti (30 wt.%) (TiB) was chosen for the Ti-B layer; 51.85Ti-43Al-4Nb-1Mo-0.15B (at%) (TNM), for the intermetallic layer. Five types of charge blanks with diameters 12 and 25 mm were investigated [contents (vol.%) 100 TiB, 100 TNM, 70 TiB/30 TNM, 50 TiB/50 TNM, and 30 TiB/70 TNM]. Experimental stress(strain rheological dependences were plotted for each type of powder blank. Three areas of compaction were distinguished on the obtained dependences. The effect of the blank diameter on the degree of deformation and the stresses arising in the powder blanks was shown. An irregular compaction mode was found at stresses above 100 MPa for a blank containing only intermetallic compounds.