Direct laser freeform fabrication of high performance metal components

Suman Das (Laboratory for Freeform Fabrication, University of Texas at Austin, Austin, Texas, USA)
Joseph J. Beama (Laboratory for Freeform Fabrication, University of Texas at Austin, Austin, Texas, USA)
Martin Wohlert (Laboratory for Freeform Fabrication, University of Texas at Austin, Austin, Texas, USA)
David L. Bourell (Laboratory for Freeform Fabrication, University of Texas at Austin, Austin, Texas, USA)

Rapid Prototyping Journal

ISSN: 1355-2546

Publication date: 1 September 1998

Abstract

This paper focuses on recent advances in direct freeform fabrication of high performance components via selective laser sintering (SLS). The application, known as SLS/HIP, is a low cost manufacturing technique that combines the strengths of selective laser sintering and hot isostatic pressing (HIP) to rapidly produce low volume or “one of a kind” high performance metal components. Direct selective laser sintering is a rapid manufacturing technique that can produce high density metal parts of complex geometry with an integral, gas impermeable skin. These parts can then be directly post‐processed by containerless HIP. The advantages of in situ 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. SLS/HIP is currently being developed under a DARPA/ONR program for INCONEL® 625 superalloy and Ti‐6Al‐4V, the demonstration components being the F‐14 turbine engine vane and the AIM‐9 missile guidance section housing base respectively.

Keywords

Citation

Das, S., Beama, J., Wohlert, M. and Bourell, D. (1998), "Direct laser freeform fabrication of high performance metal components", Rapid Prototyping Journal, Vol. 4 No. 3, pp. 112-117. https://doi.org/10.1108/13552549810222939

Download as .RIS

Publisher

:

MCB UP Ltd

Copyright © 1998, Company

Please note you might not have access to this content

You may be able to access this content by login via Shibboleth, Open Athens or with your Emerald account.
If you would like to contact us about accessing this content, click the button and fill out the form.
To rent this content from Deepdyve, please click the button.