Temperature effect on the diffusion welding process and mechanism of B2–O interface in the Ti2AlNb-based alloy:A molecular dynamics simulation

The effect of temperatures (1173–1233 K) on the diffusion welding process of the body-centered cubic titanium and the orthorhombic Ti2AlNb interface (B2–O interface) is investigated and analyzed using molecular dynamics. The result shows that Nb and Al atoms are the primary diffusive atoms in the orthorhombic single-crystal Ti2AlNb (O phase), and the diffusive distances of Ti atoms in the Β2 phase are significantly higher than that of Nb and Al...