Unique material composition obtained by electron beam melting of blended powders

Andrey Koptyug, Lars Erik Rännar, Carlos Botero, Mikael Bäckström, Vladimir Popov

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

1 Citation (Scopus)

Abstract

Today powder bed fusion based (PBF) additive manufacturing (AM) methods in metallic materials mainly employ pre-alloyed precursor powders. It was even somehow assumed that in situ alloying of the blended powders will not be effective and such PBF processing will not yield any valuable materials. Recent studies carried out both for laser- and electron beam- based PBF have demonstrated possibilities of using precursors blended from both elemental and alloyed powders. We also demonstrate that composites and alloys indeed can be manufactured from a range of different pre-blended powders with Electron Beam Melting (EBM). It is also possible achieving both composites and alloys by design in different parts of the manufactured components by varying the beam energy deposition strategy. Using sequentially fed precursor powders together with a new powder delivery system also allows manufacturing of the functionally graded materials with gradual composition variation. Blended powder precursors and sequential powder feeding should provide opportunities of manufacturing components with changing composition and material properties in a single manufacturing process. It makes possible modern industrial manufacturing of materials similar to Damascus steels, and other composites and composite-like materials in combinations with alloyed and gradient sections by choice in different parts of components.

Original languageEnglish
Title of host publicationEuro PM 2018 Congress and Exhibition
PublisherEuropean Powder Metallurgy Association (EPMA)
ISBN (Electronic)9781899072507
Publication statusPublished - 2020
Externally publishedYes
EventEuropean Powder Metallurgy Congress and Exhibition, Euro PM 2018 - Bilbao, Spain
Duration: 14 Oct 201818 Oct 2018

Publication series

NameEuro PM 2018 Congress and Exhibition

Conference

ConferenceEuropean Powder Metallurgy Congress and Exhibition, Euro PM 2018
CountrySpain
CityBilbao
Period14.10.1818.10.18

ASJC Scopus subject areas

  • Metals and Alloys
  • Surfaces, Coatings and Films
  • Surfaces and Interfaces

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