Amorphous aluminum-based materials are light yet much stronger than conventional materials, which offers opportunities in aerospace applications. However, processing the aluminum-based powder into a bulk amorphous material requires relatively low temperature and high pressure, which presents significant challenges. A two-step approach is being explored to reach the goal of a fully dense bulk amorphous or partially amorphous material. First, isostatic pressing is used to partially consolidate the material. Second, extrusion is used to take the partially dense material to full density. Process models are used to design the extrusion process, including the extrusion ratio and extrusion length, to limit the temperature increase during extrusion as a result of adiabatic heating, and to avoid excessive heating to limit devitrification of the amorphous material. A parametric study of extrusion parameters was completed and processing parameters were recommended. The use of process modeling is aimed at understanding the results from the extrusion experiments and limiting the number of iterations during extrusion.
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ASME 2003 International Mechanical Engineering Congress and Exposition
November 15–21, 2003
Washington, DC, USA
Conference Sponsors:
- Materials Division
ISBN:
0-7918-3719-X
PROCEEDINGS PAPER
Processing and Simulation of Consolidation of Amorphous Aluminum-Based Powder Material
Li Ma,
Li Ma
National Institute of Standards and Technology, Gaithersburg, MD
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Richard Fields
Richard Fields
National Institute of Standards and Technology, Gaithersburg, MD
Search for other works by this author on:
Li Ma
National Institute of Standards and Technology, Gaithersburg, MD
Tony F. Zahrah
MATSYS, Inc., Sterling, VA
Richard Fields
National Institute of Standards and Technology, Gaithersburg, MD
Paper No:
IMECE2003-41647, pp. 293-298; 6 pages
Published Online:
May 12, 2008
Citation
Ma, L, Zahrah, TF, & Fields, R. "Processing and Simulation of Consolidation of Amorphous Aluminum-Based Powder Material." Proceedings of the ASME 2003 International Mechanical Engineering Congress and Exposition. Materials. Washington, DC, USA. November 15–21, 2003. pp. 293-298. ASME. https://doi.org/10.1115/IMECE2003-41647
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