Abstract
In this paper, we prepared Ti50Zr50 single-phase solid solution alloys using copper mold spray casting process. The single-phase structure changed from the steady-state hexagonal close-packed (HCP) phase (α phase) to body-centered cubic (BCC) phase (β phase) as the cooling rate increased. The β single-phase alloy exhibited the highest yield strength (1437 MPa) and hardness (631.9 Hv) while maintained an elongation of 20.8%, which is due to the strengthening effect of the fine grains. Moreover, the Young’s modulus of the alloys decreased with the phase transition. The β single-phase alloy shows a modulus of 71 GPa, which is nearly 30% lower compared with conventional α-type Ti-Zr binary alloys.
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