EFFECT OF MICROSTRUCTURE AND UNIT CELL’S GEOMETRY ON THE COMPRESSIVE MECHANICAL RESPONSE OF ADDITIVELY MANUFACTURED Co-Cr-Mo SHEET I-WP LATTICE

So Yeon Park, Kyu Sik Kim, Bandar Almangour, Kee Ahn Lee*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Co-Cr-Mo based sheet I-WP lattice was fabricated via laser powder bed fusion. The effect of microstructure and the I-WP shape on compressive mechanical response was investigated. Results of compression test showed that yield strength of the sheet I-WP was 176.3 MPa and that of bulk Co-Cr-Mo (reference material) was 810.4 MPa. By applying Gibson-Ashby analytical model, the yield strength of the lattice was reversely estimated from that of the bulk specimen. The calculated strength of the lattice obtained was 150.7 MPa. The shape of deformed lattice showed collective failure mode, and its microstructure showed that strain-induced martensitic transformation occurred in the overall lattice. The deformation behavior of additively manufactured sheet I-WP lattice was also discussed.

Original languageEnglish
Pages (from-to)1525-1529
Number of pages5
JournalArchives of Metallurgy and Materials
Volume67
Issue number4
DOIs
StatePublished - 2022

Bibliographical note

Publisher Copyright:
© 2022. The Author(s).

Keywords

  • Co-Cr-Mo
  • Compressive mechanical response
  • Laser powder bed fusion
  • Strain-induced martensitic transformation
  • sheet I-WP lattice

ASJC Scopus subject areas

  • Metals and Alloys

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