The mechanical and microstructural characteristics of laser-deposited IN718

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Abstract

The paper is concerned with the application of laser deposition to the nickel-based superalloy INCONEL™ 718 (IN718). Several blocks of material were manufactured using the LENS™ process and subsequently heat treated and tensile tested. Following this, further sections of the original blocks were hot isostatically pressed (HIPed) and then reassessed for mechanical properties and microstructure. It was found that prior to HIPing the deposit exhibited anisotropic properties that appeared to be associated with non-optimised processing conditions. HIPing led to a reduction in anisotropy within the deposit, but generated considerable grain growth within the (IN718) substrate.
Original languageEnglish
Pages (from-to)240-246
Number of pages7
JournalJournal of Materials Processing Technology
Volume170
Issue number1-2
DOIs
Publication statusPublished - 14 Dec 2005

Keywords

  • laser deposition
  • nickel
  • INCONEL™ 718
  • microstructural characteristics

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