Published January 2021 | Version v1
Journal article Metadata-only

Enhancing the corrosion properties of additively manufactured AlSi10Mg using friction stir processing

Creators

  • 1. Faculty of Engineering and Applied Science, Memorial University of Newfoundland, St. John's, NL, A1B 3X5 (Canada)
  • 2. Marine Additive Manufacturing Centre of Excellence (MAMCE), University of New Brunswick, Fredericton, NB, E3B 5A3 (Canada)
  • 3. Centre for Advanced Materials Joining, Department of Mechanical and Mechatronics Engineering, University of Waterloo, 200 University Avenue West, Waterloo, ON, N2L 3G1 (Canada)
  • 4. Department of Mechanical Engineering, Dalhousie University, 1360 Barrington St, Halifax, NS, B3H 4R2 (Canada)

Description

Highlights: • Friction stir processing (FSP) eliminated the L-PBF induced porosities in AlSi10Mg alloy. • Grain refinement and uniform silicon particles distribution were detected after FSP. • FSPed L-PBF AlSi10Mg alloy showed improved corrosion performance. • Formation of a more stable and thicker passive film was noticed after FSP. • Donor density in the passive layer decreased after FSP. The solid-state structural modification technique friction-stir-processing (FSP) was applied on the surface of a laser-powder-bed-fusion fabricated AlSi10Mg alloy to locally modify the microstructure and enhance the corrosion properties of the alloy. A uniform microstructure was formed after FSP, comprised of a homogenous distribution of the Si-particles embedded in an Al-matrix with an ultrafine-grained structure containing a low fraction of subgrains, and reduced porosity level. This structure offers improved corrosion properties, ascribed to the formation of a thicker passive layer with a lower donor density on the FSPed regions as compared to the as-fabricated metal.

Availability note (English)

Available from http://dx.doi.org/10.1016/j.corsci.2020.109073

Additional details

Identifiers

DOI
10.1016/j.corsci.2020.109073;
PII
S0010938X20323544;

Publishing Information

Journal Title
Corrosion Science
Journal Volume
178
Journal Page Range
vp.
ISSN
0010-938X
CODEN
CRRSAA

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
54016635
Subject category
S36: MATERIALS SCIENCE; S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
3D PRINTING; ADDITIVES; ALLOYS; CORROSION; DENSITY; FRICTION; GRAIN REFINEMENT; LASERS; MATRICES; METALS; MICROSTRUCTURE; PERFORMANCE; POROSITY; POWDERS; SILICON; SURFACES; THIN FILMS
Descriptors DEC
CHEMICAL REACTIONS; COMPUTER-AIDED FABRICATION; ELEMENTS; FABRICATION; FILMS; PHYSICAL PROPERTIES; SEMIMETALS

Optional Information

Copyright
Copyright (c) 2020 Elsevier Ltd. All rights reserved.