Microstructure and strengthening mechanism of ultrastrong and ductile Ti-xSn alloy processed by powder metallurgy

Multiaxial fatigue life assessment of sintered porous iron under proportional and non-proportional loadings

Factors affecting properties of Ti-6Al-4V alloy additive manufactured by metal fused filament fabrication

Prediction of maximum fatigue indicator parameters for duplex Ti-6Al-4V using extreme value theory

Incorporation of wollastonite bioactive ceramic with titanium for medical applications: An overview

The fatigue characteristics of powder metallurgy (P/M) Ti6Al4V (wt%) alloys prepared by powder sintering and hot rolling were studied under tension–tension loading conditions at R =0.1 and 25 Hz in air, where R = σ min / σ max ( σ min and σ max are the applied minimum and maximum stresses, respectively). The results show that for the as-sintered Ti6Al4V alloy the fatigue limit is about 325 MPa, and the fatigue cracks initiate from the residual pores open to the surface of the gauge area and propagate along the α/β interfaces. Hot rolling markedly enhances the fatigue properties, and the fatigue limit increases to about 430 MPa. The reducing of porosity and refining of grain size through hot rolling are the dominant mechanisms for the improvement of fatigue properties. In addition, the microstructure of α/β interfaces//RD and the texture of α//RD formed during hot rolling act as barriers for the fatigue crack propagation, which partly attributes to the improvement of the fatigue properties.

Characterization of fatigue properties of powder metallurgy titanium alloy

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Characterization of fatigue properties of powder metallurgy titanium alloy