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TC11 titanium alloy samples with lamellar microstructrue were compressed on a Gleeble 1500D Simulator.Compression tests were carried out at 950 ℃ and a strain rate of 0.1 s-1 with height reduction of 20%,40% and 60%,respectively.Microstruture of the compressed TC11 alloy was obeserved and analyzed by optical microscopy(OM),transmission electron microscope(TEM),electron back-scattered diffraction(EBSD).The lamellar disintegration mechanism of the TC11 titanium alloy was deduced.The results indicated that the compressive deformation promoted the phase transformation in bi-phase area.βphase layers were formed along the gliding planes inα phase,and α slivers were disintegrated into many small flakes through theα/βinterface slipping.
TC11 titanium alloy samples with lamellar microstructrue were compressed on a Gleeble 1500D Simulator. Compression tests were carried out at 950 ° C and a strain rate of 0.1 s-1 with height reduction of 20%, 40% and 60%, respectively. Microstruture of the compressed TC11 alloy was obeserved and analyzed by optical microscopy (OM), transmission electron microscope (TEM), electron back-scattered diffraction (EBSD) .The lamellar disintegration mechanism of the TC11 titanium alloy was deduced.The results indicated that the compressive deformation promoted the phase transformation in bi-phase area. βphase layers were formed along the gliding planes in α phase, and α slivers were disintegrated into many small flakes through the α / β interface slipping.