1997 / Solid Freeform Fabrication Proceedings
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Author Suman Das, Martin Wohlert, Joseph J. Beaman, David L. Bourell, University of Texas at Austin, Departinent of Mechanical Engineering, Laboratory for Freeform Fabrication
Source Solid Freeform Fabrication Proceedings, 1997, p 81-90
Abstract A novel net shape manufacturing method known as SLS/HIP that combines the strengths of selective laser sintering (SLS) and hot isostatic pressing (HIP) is presented. Direct selective laser sintering is a rapid manufacturing technique that can produce high density metal components of complex geometry with an integral, gas impermeable skin. These components can then be directly post-processed to full density by containerless HIP. The advantages of in-situ HIP encapsulation include elimination of a secondary container material and associated container-powder interaction, reduced pre-processing time, a short HIP cycle and reduction in post-processing steps compared to HIP of canned parts. Results of research conducted on Inconel 625 superalloy, Ti-6AI-4V and Monel are presented. This research is funded by DARPA/ONR contract N00014-95-C- 0139 titled "Low Cost Metal Processing Using SLS/HIP". (Auth abstract) [References: 16]
Solid Freeform Fabrication Proceedings can be obtained from: The Solid Freeform Fabrication Symposium
or contact:
The University of Texas at Austin
Laboratory for Freeform Fabrication / Texas Materials Institute
Mechanical Engineering Dept.
c/o The Solid Freeform Fabrication Symposium
MC C2200
Austin, TX 78712-1063 USA
512-471-3026; 512-471-7681 FX; Email: sffsymp@uts.cc.utexas.edu