Characterization of Consolidation of Non-Spherical Powders

Award Information
Agency: Department of Commerce
Branch: N/A
Contract: N/A
Agency Tracking Number: 37798
Amount: $49,943.00
Phase: Phase I
Program: SBIR
Awards Year: 1997
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
MATSYS, Incorporated
1700 N. Moore Street, Suite, 1250, Arlington, VA, 22209
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Dr. Tony F. Zahrah
 () -
Business Contact
Phone: (703) 524-1160
Research Institution
N/A
Abstract
We propose to characterize the early stage of consolidation of non-spherical powders to further the development of process models to enable simulation of powder metallurgy manufacturing for the consumer market, especially the automotive industry. Typically, spherical powders with a narrow size distribution are used for aerospace applications, while low-cost powders with irregular shapes and a wide powder size distribution are used for the consumer market. Ashby and colleagues have developed models for powder consolidation which rely on an assumed ideal packing of spherical monosized particles, with a uniform initial relative density around 0.64. For low-cost, irregular shape powders, the initial relative density is low (typically around 0.40) and varies within a component. It is the ultimate objective to expand the applicability of existing consolidation models which have proved extremely useful for net shape forming in the aerospace industry. The objectives of Phase 1 are (1) full characterization of die filling operation and identification of potential improvements; and (2) characterization of powder compaction/rearrangement for non-spherical particles and identification of critical parameters for use as model inputs. The results can be used to develop a complete set of experimentally validated models to simulate compaction of non-spherical powders.

* information listed above is at the time of submission.

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