A novel strategy to fabricate thin 316L stainless steel rods by continuous directed energy deposition in Z direction

Fei Weng, Shiming Gao, Jingchao Jiang, Jian Jian Wang, Ping Guo*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

Thin 316L stainless steel rods were fabricated by continuous directed energy deposition in Z direction. The process parameters (laser power, scan velocity, and powder feeding rate) were carefully selected to obtain a stable deposition process and the effects of powder feeding rate and scan velocity were studied. A preliminary study on microstructure and tensile properties of the specimens was carried out. Results indicated that the specimen showed superior austenite/ferrite (γ/δ) dual phase microstructure, high strength (608.24 MPa), and good plastic deformation capacity (65.08% shrinkage rate) when setting the laser power at 45.2 W, powder feeding rate at 2.81 g/min, and scan velocity at 0.5 mm/s. The technique reported in this paper is expected to lay the foundation for the deposition of wire or frame structures more efficiently than traditional layer-by-layer directed energy deposition.

Original languageEnglish (US)
Pages (from-to)474-481
Number of pages8
JournalAdditive Manufacturing
Volume27
DOIs
StatePublished - May 2019

Keywords

  • 316L
  • Continuous directed energy deposition
  • Stainless steel
  • Z direction

ASJC Scopus subject areas

  • Biomedical Engineering
  • Materials Science(all)
  • Engineering (miscellaneous)
  • Industrial and Manufacturing Engineering

Fingerprint Dive into the research topics of 'A novel strategy to fabricate thin 316L stainless steel rods by continuous directed energy deposition in Z direction'. Together they form a unique fingerprint.

Cite this