Experimental study of the deformation behaviour of compacted metal powders used in a new rapid tooling process

Download
  1. (PDF, 1 MB)
  2. Get@NRC: Experimental study of the deformation behaviour of compacted metal powders used in a new rapid tooling process (Opens in a new window)
DOIResolve DOI: http://doi.org/10.1243/095440605X16910
AuthorSearch for: ; Search for: ; Search for:
TypeArticle
Journal titleJournal of Mechanical Engineering Science
ISSN0022-2542
Volume219
Issue4
Pages347355; # of pages: 9
Subjectrapid tooling; deformation behavior; compacted metal powder; elastic property
AbstractTo examine the feasibility of a newly proposed rapid tooling process based on the backing of a metal shell with metal powders, the compressive deformation behaviour of selected metal powders and metal shells was investigated. It was found that the mechanical properties of the powder material and the mixing ratio of powders of different sizes had a significant effect on the compressive deformation behaviour of the compacted powders. Softer metal powders with the same compressive stress tended to produce greater plastic deformation and formed a block under a stress of 138 MPa. Mixing two or more powders of different sizes could significantly increase the deformation resistance of the compacted powders. Minimum plastic deformation was achieved when the fraction of the coarse powder in a binary powder mixture reached 0.77. Initial loading at a higher stress could minimize or eliminate the plastic deformation in subsequent loading cycles. This feature could be used advantageously in powder packing for the proposed new rapid tooling process. Some elastic properties of the compacted metal powders were also determined from the compression experimental data.
Publication date
LanguageEnglish
AffiliationNRC Industrial Materials Institute; National Research Council Canada
Peer reviewedYes
NPARC number21272498
Export citationExport as RIS
Report a correctionReport a correction
Record identifier64b1a1fc-5e7f-49eb-8c60-6db9e7d60ba6
Record created2014-12-01
Record modified2016-05-09
Bookmark and share
  • Share this page with Facebook (Opens in a new window)
  • Share this page with Twitter (Opens in a new window)
  • Share this page with Google+ (Opens in a new window)
  • Share this page with Delicious (Opens in a new window)