Development of low alloy high strength steel process parameters for direct metal laser sintering

Elias Jelis, Stacey Kerwien, Nuggehalli M. Ravindra, Matthew Clemente

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

Direct Metal Laser Sintering (DMLS) is an emerging additive manufacturing process with the capability to manufacture small parts with complex geometries which otherwise cannot be produced by subtractive manufacturing techniques. Most components produced by DMLS are fully dense and have mechanical properties that are comparable to wrought material. In order to increase the use of DMLS, it is critical to expand the number of qualified powders from twelve to produce a wider range of alloys for DoD (Department of Defense)-centric applications. Development of low-alloy high-strength steels for the DMLS process will increase the applications of this technology for the DoD to support readiness, repair and maneuverability. For this study, a DMLS 'recipe' for a new metal powder was created by adjusting machine parameters (i.e. hatch distance and laser scan rate) in an effort to produce a fully dense structure with excellent mechanical properties. Microhardness and microstructure analyses were used to investigate the effects of the machine parameters on the quality of the steel component.

Original languageEnglish (US)
Title of host publicationMaterials Science and Technology Conference and Exhibition 2014, MS and T 2014
PublisherAssociation for Iron and Steel Technology, AISTECH
Pages2011-2018
Number of pages8
ISBN (Electronic)9781634397230
StatePublished - Jan 1 2014
EventMaterials Science and Technology Conference and Exhibition 2014, MS and T 2014 - Pittsburgh, United States
Duration: Oct 12 2014Oct 16 2014

Publication series

NameMaterials Science and Technology Conference and Exhibition 2014, MS and T 2014
Volume3

Other

OtherMaterials Science and Technology Conference and Exhibition 2014, MS and T 2014
CountryUnited States
CityPittsburgh
Period10/12/1410/16/14

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Materials Science(all)

Keywords

  • Laser sintering
  • Microhardness
  • Microstructure
  • Process parameters
  • Steel

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