Characteristics of laser-fabricated metal structures

    Authors

    S. Sankaranarayanan; W. Guo;A. Kar

    Comments

    Authors: contact us about adding a copy of your work at STARS@ucf.edu

    Abbreviated Journal Title

    Mater. Manuf. Process.

    Keywords

    EXTENDED SOLID-SOLUTION; DIFFUSION-MODEL; Engineering, Manufacturing; Materials Science, Multidisciplinary

    Abstract

    Laser-aided direct fabrication technology is developed to produce three-dimensional metal alloy structures directly from the constituent elements. The shapes of the structures are designed using Computer Aided Design (CAD) tools and are fabricated as real parts by fusing powders with a laser beam. In this study, alloy structures of simple plate like geometry were produced by mixing stainless steel (SS 316) powder with either copper or aluminum powder. The thickness of the component is related to the process parameters through an energy balance equation, which is verified against experimental data. Material properties such as hardness, strength and conductivity are analyzed and optical micrographs are presented to exhibit the microstructure of the alloy. The results show improved hardness at certain locations in the alloy, higher thermal conductivity of stainless steel. However, the structures broke due to brittle failure under tensile loads.

    Journal Title

    Materials and Manufacturing Processes

    Volume

    13

    Issue/Number

    4

    Publication Date

    1-1-1998

    Document Type

    Article

    Language

    English

    First Page

    537

    Last Page

    554

    WOS Identifier

    WOS:000075247200004

    ISSN

    1042-6914

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