Strength and plastic properties of porous Al doped TiNi-based alloys
Strength and plastic properties of porous Al doped TiNi-based alloys have been studied. Porous alloys were produced by reaction sintering of Ti, Ni and Al powders. The Al doping was shown to increase the ultimate bending strength more than 3.5 times. The favorable Al doping range, which improves the strength properties of porous TiNi-based alloys, is within 0.1-1.5 at.%. The increase of strength properties was due to expansion of porous intersections' thickness and precipitation hardening of the TiNi phase.