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    Segregation Evolution and Diffusion of Titanium in Directed Energy Deposited NASA HR-1

    Segregation Evolution and Diffusion of Titanium in Directed Energy Deposited NASA HR-1


    Titanium segregation in single-pass directed energy deposited (DED) NASA HR-1 is very difficult to control because grain size varies considerably and many large grains (>100 μm) are present. Therefore, homogenization kinetic analysis was performed to see how the homogenization process should be adjusted to mitigate titanium segregation. A basic model for titanium diffusion in NASA HR-1 was developed to project titanium segregation as a function of homogenization temperature, time, and grain size. The homogenization kinetic analysis provides a valuable reference on how the homogenization treatment should be adjusted to reduce titanium segregation to a very low level for DED NASA HR-1.

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    Titel :

    Segregation Evolution and Diffusion of Titanium in Directed Energy Deposited NASA HR-1

    Beteiligte:
    P S Chen (Autor:in) / C C Katsarelis (Autor:in) / W M Medders (Autor:in) / P R Gradl (Autor:in)
    Erscheinungsdatum :

    2021-05-01

    Medientyp :

    Report

    Format :

    Keine Angabe

    Sprache :

    Englisch

    Schlagwörter :

    AM , DED , Metals And Metallic Materials , liquid rocket engine , HEE , phase computation , PHACOMP , additive manufacturing , hydrogen environment embrittlement , LRE , directed energy deposited , NASA HR-1

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