Microstructure and mechanical properties of Al-12Si produced by selective laser melting: Effect of heat treatment

K. G. Prashanth, S. Scudino, H. J. Klauss, K. B. Surreddi, L. Löber, Z. Wang, A. K. Chaubey, U. Kühn, J. Eckert

    Research output: Contribution to journalArticle

    300 Citations (Scopus)

    Abstract

    Al-12Si specimens are produced by selective laser melting (SLM) from gas atomized powders. An extremely fine cellular structure is observed with residual free Si along the cellular boundaries. Room temperature tensile tests reveal a remarkable mechanical behavior: the samples show yield and tensile strengths of about 260. MPa and 380. MPa, respectively, along with fracture strain of ~3%. The effect of annealing on microstructure and related tensile properties is examined and the results demonstrate that the mechanical behavior of the Al-12Si SLM samples can be tuned within a wide range of strength and ductility through proper annealing treatment.

    Original languageEnglish
    Pages (from-to)153-160
    Number of pages8
    JournalMaterials Science and Engineering A
    Volume590
    DOIs
    Publication statusPublished - 2014 Jan 10

    Keywords

    • Aluminum alloys
    • Microstructure
    • Selective laser melting
    • Tensile behavior

    ASJC Scopus subject areas

    • Materials Science(all)
    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering

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  • Cite this

    Prashanth, K. G., Scudino, S., Klauss, H. J., Surreddi, K. B., Löber, L., Wang, Z., Chaubey, A. K., Kühn, U., & Eckert, J. (2014). Microstructure and mechanical properties of Al-12Si produced by selective laser melting: Effect of heat treatment. Materials Science and Engineering A, 590, 153-160. https://doi.org/10.1016/j.msea.2013.10.023