Effect of Solution and Aging Treatment on Microstructure and Tensile Properties of Ti6246 Titanium Alloy
The Ti6246 titanium alloy was treated by solution and aging at different temperatures.The microstructural morphology and room temperature tensile properties of the alloy after different solution aging temperature treatments were studied using optical microscopy,scanning electron microscopy,and tensile performance testing.The results show that:the content of primary α phase in the microstructure of the alloy gradually decreases and the morphology gradually becomes equiaxed as the solid solution temperature increases.while the content of fine needle-like secondary α phase in the microstructure gradually increases in this process.The increase in solid solution temperature will lead to an increase in alloy strength,but the plasticity gradually decreases with the increase in solid solution temperature.Through analysis,it is found that the plasticity of the alloy is mainly influenced by the primary α phase in the microstructure,while the strength of the alloy is mainly influenced by the secondary α phase in the microstructure.When the solution temperature is in the two-phase region,the tensile fracture morphology is mainly composed of dimples,and there are a certain number of microcracks.When the solution temperature increases to the temperature of the single-phase region,the tensile fracture changes from toughness to rock-like morphology,and the cleavage step is obvious.
万方数据
维普
