TiB2–TiC–Al2O3 and ZrB2–ZrC–Al2O3 composites were produced via PTFE (polytetrafluoroethene)-activated combustion synthesis involving low-exotherm thermites. The reactant stoichiometries 3TiO2 + 4Al 0.5B4C (1 ? x)C xCPTFE 3ZrO2 y)C yCPTFE. played a dual role in promoting the reaction carburizing reduced Ti Zr. threshold amount of for TiO2/Al-based was 2 wt% (i.e., x = 0.15) ZrO2/Al-based 3 y 0.2...

In this study, a Ti–33Zr–12Al–6V alloy was prepared, and its work hardening softening mechanisms were investigated via tensile tests conducted at room temperature. The interaction between the dislocations strain-induced martensite (SIM) results in hardening; whereas, shearing of grain boundaries by for entering adjacent grains softening, which occurs when logarithmic strains is 5.8% 7.6%. Work ...

Abstract. Temperature reduction of superplastic forming titanium alloys is currently a significant issue. The present study focused on the effect modifying Ti-4Al-3Mo-1V-0.1B alloy with 0.5-2 wt% Co additions behavior and microstructure evolution. results demonstrated that alloying promoted formation recrystallized globular before beginning deformation due to acceleration diffusivity by in comp...