Nanomechanical properties of additively and traditionally manufactured nickel-chromium-based superalloys through instrumented nanoindentation

Michael Munther, Tyler Palma, Fariborz Tavangarian, Ali Beheshti, Keivan Davami

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

Despite the potential and promising future of additive manufacturing (AM), the quality and performance of the products from metal additive manufacturing has been susceptible to skepticism. Herein, a nanoindentation method was implemented to compare the hardness, Young's modulus, and fracture toughness in AM and hot-rolled Inconel 718. Results indicated that Young's modulus and hardness of AM IN718 were nearly 25% and 50% smaller, respectively, compared to hot-rolled specimens. Indentation fracture toughness measurements showed that the traditionally fabricated specimens had a fracture toughness close to the reported range, but that of the AM samples was almost 25% smaller.

Original languageEnglish (US)
Pages (from-to)39-43
Number of pages5
JournalManufacturing Letters
Volume23
DOIs
StatePublished - Jan 2020

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Industrial and Manufacturing Engineering

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