Journal
MATERIALS LETTERS
Volume 248, Issue -, Pages 165-168Publisher
ELSEVIER
DOI: 10.1016/j.matlet.2019.04.024
Keywords
Metals and alloys; Material extrusion additive manufacturing; Polymers; Steel powder; Tensile properties
Funding
- European Union's Horizon 2020 programme [636881]
- Austrian Promotion Agency [860385]
- H2020 Societal Challenges Programme [636881] Funding Source: H2020 Societal Challenges Programme
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Material extrusion additive manufacturing can be used for producing metal specimens when combined with debinding and sintering, similar to metal injection moulding. A highly-filled polymeric filament containing 55 vol% of 17-4PH stainless steel powder was prepared and used to print dog-bone specimens. Printed specimens were debound and sintered to obtain metallic specimens. The tensile properties were investigated. The average Young's modulus was determined to be 196 GPa, the average maximum stress was 696 MPa and the strain at break 4%. Adequate cohesion between layers during material extrusion additive manufacturing is crucial for improving the mechanical properties of sintered specimens. (C) 2019 Elsevier B.V. All rights reserved.
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