skip to main content
Idioma:

Unusually high room and elevated-temperature tensile properties observed in direct aged wire-arc directed energy deposited Inconel 718

Song, Jie ; Jimenez, Xavier A ; Russell, Carissa ; To, Albert C ; Fu, Yao

Scientific reports, 2023-11, Vol.13 (1), p.19235-19235, Article 19235 [Periódico revisado por pares]

London: Nature Publishing Group

Texto completo disponível

Citações Citado por
  • Título:
    Unusually high room and elevated-temperature tensile properties observed in direct aged wire-arc directed energy deposited Inconel 718
  • Autor: Song, Jie ; Jimenez, Xavier A ; Russell, Carissa ; To, Albert C ; Fu, Yao
  • Assuntos: Aging ; Chemical precipitation ; High temperature ; Homogenization ; Mechanical properties ; Tensile properties
  • É parte de: Scientific reports, 2023-11, Vol.13 (1), p.19235-19235, Article 19235
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
  • Descrição: Wire-arc directed energy deposition (DED) processed Inconel (IN) 718 is known to have coarse columnar grains, strong texture, and significant chemical and microstructural inhomogeneity in the as-fabricated condition. Homogenization treatment is commonly used prior to aging to eliminate the inhomogeneity and detrimental precipitation for better mechanical properties. In this study, however, direct aging (DA) at 700 °C without homogenization has resulted in room-temperature yield strength, ultimate tensile strength (UTS), and elongation that are comparable to wrought condition and among the highest reported properties for wire-arc DED IN718. The DA samples at between 650 and 750 °C aging also demonstrates remarkable ductility when deformed at elevated temperatures. In addition, when aged below 750 °C the DA IN718 possesses significantly higher UTS compared to those with homogenization treatment. These superior mechanical properties are highly likely due to the non-uniform and hierarchical precipitation consisting of disk-shaped γ″ in diameter from a few to tens of nm in the dendritic core area and micron-sized Laves phase and carbides in the inter-dendritic region.
  • Editor: London: Nature Publishing Group
  • Idioma: Inglês
Voltar para lista de resultados

  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

Buscando em bases de dados remotas. Favor aguardar.