Selective laser melting of Al–Si–10Mg alloy: microstructural studies and mechanical properties assessment

Ashwath Pazhani, M. Anthony Xavior, Andre Batako, P. Jeyapandiarajan, J. Joel

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)
64 Downloads (Pure)

Abstract

Additive Manufacturing (AM) technique is widely recognized by aerospace sectors for its potential to fabricate complex shape components directly from a Computer-Aided Model data (CAM). Selective Laser Melting (SLM) is an innovative method high degree of adaptability among different AM techniques. SLM is one of the AM techniques adopted to produce the three-dimensional complex shape components. Current research work focuses on fabricating an Al–Si–10Mg aluminium alloy by SLM process which is studied for the influence of scanning speed and build orientation on the mechanical strength and surface finish of the as built component compared with as casted specimen. The importance of the sample studied for the scanning speed and built direction is relatively essential exclusively for dynamic applications. The as-built samples surface micrographs was surprisingly refined with a progressively reduced grain size diameter from 7.2 μm to 5.5 μm by increasing scanning speed compared to that of AlSi10Mg parts (∼9.1 μm). The mean layer thickness increased from 20 μm to 30 μm by decreasing the scanning speed from 500 mm/s to 200 mm/s. Attractive advantage of the Orowan mechanism, fine grain strengthening, and the graded interfacial layer, a considerably-high microhardness (135 ± 3.1HV), and enhanced mechanical properties were achieved.

Original languageEnglish
Pages (from-to)2249-2258
Number of pages10
JournalJournal of Materials Research and Technology
Volume17
Issue numberMarch-April
Early online date7 Feb 2022
DOIs
Publication statusPublished - 1 Mar 2022
Externally publishedYes

Bibliographical note

© 2022 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

Keywords

  • Additive manufacturing
  • Aluminum alloys
  • Microhardness
  • Selective laser melting (SLM)
  • Strength validation
  • Surface finish

ASJC Scopus subject areas

  • Ceramics and Composites
  • Biomaterials
  • Surfaces, Coatings and Films
  • Metals and Alloys

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