EFFECT OF β-FLECKS ON MECHANICAL PROPERTIES OF Ti-10V-2Fe-3Al ALLOY

Effect of β-flecks on properties of tensile elongation and low cycle.fatigue life at room tern.perature for Ti-10V-2Fe-3Al alloy has been investigated.The cracks along initial β-grainboundaries in the β-fleck region may propagate to form intergranular brittle fracture.Underalternating load,the β-fleck often becomes a fatigue origin.While under higher strain,thecracks initiate and propagate to fracture early at the original β-grain boundaries in β-fleckregion and at α-grain boundaries.