Anisotropic fracture toughness of a selective laser melted martensitic stainless steel

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Anisotropic fracture toughness of selective laser melted AISI 420 built in two build directions was investigated. Post-process heat treatments were performed at 200 °C and 400 °C to study the tempering effect. The parallel group exhibited better fracture toughness than the perpendicular group in both as-built and tempered states. KIC value of the 400 °C tempered state was superior to that of other states due to a coarser martensite phase. Elongated cellular structure was responsible for the anisotropic behavior because of a build direction effect, while the anisotropy was barely changed by the tempering treatments.

Original languageEnglish
Article number109348
JournalEngineering Fracture Mechanics
Volume287
DOIs
StatePublished - 14 Jul 2023

Keywords

  • Anisotropy
  • Elongated cellular structure
  • Fracture toughness
  • Selective laser melting
  • Tempering treatment

Fingerprint

Dive into the research topics of 'Anisotropic fracture toughness of a selective laser melted martensitic stainless steel'. Together they form a unique fingerprint.

Cite this