Hot Deformation Behavior and Microstructure Evolution of Ti–6Cr–5Mo–5V–4Al–1Nb Alloy

This study looked into the thermo-mechanical properties and recrystallization mechanisms of Ti–5.5Cr–5Mo–5V-4Al–1Nb alloy (wt.%, Ti−65541). Hot compression experiments were conducted at two phase regions (740~950 °C) strain rates from 0.001 to 1 s−1. The compressive strain–stress curves corrected by adiabatic heating effect. Arrhenius model was established provided a reliable prediction value stress with 0.992 correlation coefficient. constructed processing map demonstrated that when temperature rose rate fell, power dissipation efficiency (η) showed rising trend. By utilizing electron backscattered diffraction (EBSD), microstructural evolution deformation process analyzed. It possible witness both continuous dynamic (cDRX) discontinuous (dDRX). recovery (DRV) dDRX eventually replaced while η decreased. Moreover, band (DB) impeded re-crystallization in low area. can supply relatively interval for new Ti−65541 alloy.