Effect of B content on microstructure and properties of powder metallurgy Ti-2Mn-2Sn alloy

Ti-2Mn-2Sn-xB (x = 0, 0.3, 0.5, 1, and 2 wt%) was produced in this research employing conventional powder metallurgy methods (cold pressing and sintering). The densification behavior, microstructure, and mechanical properties of Ti-2Mn-2Sn alloy caused by the addition of B were systematically studied. The outcomes indicated that the inclusion of B element can inhibit the densification behavior of Ti-2Mn-2Sn alloy. The morphology of microstructure eventually shifts from plate to equiaxial with the inclusion of B element. When the B element is less than 2 wt%, the strength of the sample exhibits an upward trend, which is mainly attributable to the combined effect of grain refinement and the presence of small amounts of TiB.