Ultrasonic additive manufacturing of steel: Method, post-processing treatments and properties

Asaf Levy, Aslan Miriyev, Niyanth Sridharan, Tianyang Han, Eran Tuval, Sudarsanam Suresh Babu, Marcelo J. Dapino, Nachum Frage

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

Ultrasonic additive manufacturing (UAM) was applied to fabricate laminated carbon steel structures. The feasibility of UAM to manufacture low-alloy carbon steel samples was proven. Interface investigation of the UAM parts was conducted by SEM, EBSD and TEM analysis. Multiple defects at the interfaces of the as-printed parts were observed. In order to improve the structural homogeneity and mechanical properties of the parts, spark plasma sintering (SPS) and hot isostatic pressing (HIP) post-treatments were applied. As a result, after both treatments, interface defects were healed and the shear strength of the welding interfaces was significantly improved. Treatment by SPS apparatus showed higher shear strength improvements as compared to the HIP-treated specimens.

Original languageEnglish
Pages (from-to)183-189
Number of pages7
JournalJournal of Materials Processing Technology
Volume256
DOIs
StatePublished - 1 Jun 2018

Keywords

  • Hot isostatic press
  • Interface
  • Low-alloy carbon steel
  • Post-treatment
  • Spark plasma sintering
  • Ultrasonic additive manufacturing

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