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Selective Laser Melting of Metal Matrix Composites: FY19 Advanced Materials and Processes Line-Supported Program

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Technical Report

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MIT Lincoln Laboratory Lexington United States

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This document describes progress toward developing aluminum matrix composites that can be processed with selective laser melting SLM, a 3D printing method that uses a high intensity laser to consolidate thin layers of metal powder. Feedstock powders have been developed specifically for the SLM process, and laser consolidation has been conducted with an SLM testbed. The results thus far demonstrate exceptional properties at the microscale and suggest a clear path for transitioning these properties into macroscale samples and components. The ultimate goal of the program is to transfer the materials and methods to commercial SLM machines at MIT LL and other organizations, enabling materials with high specific stiffness to be used for the first time in components requiring short lead times and complex shapes.

Subject Categories:

  • Lasers and Masers
  • Laminates and Composite Materials

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