Additive Manufacturing Letters (Dec 2022)

Crack growth in conventionally manufactured pure nickel, titanium and aluminum and the cold spray additively manufactured equivalents

  • Rhys Jones,
  • Ondrej Kovarik,
  • Jan Cizek,
  • Andrew Ang,
  • Jeff Lang

Journal volume & issue
Vol. 3
p. 100043

Abstract

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It has recently been shown that when the da/dN versus ΔK curves associated with crack growth in conventionally manufactured, additively manufactured (AM), and cold spray additively manufactured (CSAM) 316L stainless steel are replotted with da/dN expressed as a function of the Schwalbe crack driving force (Δκ), then the various different curves collapsed onto a single master curve. This study reveals that this phenomenon also arises for crack growth in titanium, nickel, and aluminum. In each case, the da/dN versus Δκ relationship is shown to be independent of whether the specimen was conventionally manufactured or produced by CSAM.

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