To improve the fatigue properties of additive manufactured (AM) titanium alloy Ti6Al4V, cavitation abrasive surface finishing (CASF) was proposed. With CASF, a high-speed water jet with cavitation, i.e. a cavitating jet, was injected into a water-filled chamber, to which abrasives were added. Abrasives accelerated by the jet created a smooth surface by removing un-melted particles on the surface. Simultaneously, cavitation impacts induced by the jet introduced compressive residual stress and work hardening into the surface, similar to cavitation peening. In this study, to demonstrate the improvement of the fatigue properties of AM Ti6Al4V owing to CASF, Ti6Al4V specimens manufactured through direct metal laser sintering (DMLS) and electron beam melting (EBM) were treated using CASF and cavitation peening, and tested using a plane bending fatigue test. The fatigue life of the specimen treated using CASF was found to be better than that of an as-built specimen, as CASF made the surface smooth with the introduction of compressive residual stress and work hardening at the same time. The fatigue properties of the specimen treated using cavitation peening after CASF (CASF & cavitation peening) surpassed that of the specimen treated using CASF. The fatigue strength of the AM Ti6Al4V at 107 was 185 ± 9 MPa for the as-built DMLS specimen, 169 ± 14 MPa for the as-built EBM specimen, 425 ± 9 MPa for the DMLS specimen treated using CASF & cavitation peening, and 386 ± 9 MPa for the EBM specimen treated using CASF & cavitation peening.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Use of Cavitation Abrasive Surface Finishing to Improve the Fatigue Properties of Additive Manufactured Titanium Alloy Ti6Al4V


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    de Silva, Channa (Autor:in) / Sanders, Daniel (Autor:in) / Soyama, Hitoshi (Autor:in)

    Kongress:

    AeroTech® Digital Summit ; 2021



    Erscheinungsdatum :

    02.03.2021




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Use of Cavitation Abrasive Surface Finishing to Improve the Fatigue Properties of Additive Manufactured Titanium Alloy Ti6Al4V

    Sanders, Daniel / Soyama, Hitoshi / de Silva, Channa | British Library Conference Proceedings | 2021


    Characterization of Titanium Alloy (Ti6Al4V) Obtained by Additive Manufacturing

    Da Silva, Jorge Vicente Lopes / Santiago, Rafael Celeghini / Da Fonseca Brasil, Reyolando Lopes Rebello et al. | SAE Technical Papers | 2020


    Strain Controlled Fatigue Testing of Additive Manufactured Titanium Alloy Ti-6Al-4V

    Plaskitt, Rob / Halfpenny, Andrew / Hill, Michelle | Springer Verlag | 2019


    High Cycle Fatigue and Fatigue Crack Growth Rate in Additive Manufactured Titanium Alloys

    Zhang, Xiang / Syed, Abdul Khadar / Biswal, Romali et al. | Springer Verlag | 2019