Cosintering of powder injection molding parts made from ultrafine WC-Co and 316L stainless steel powders for fabrication of novel composite structures

Simchi, A. (Abdolreza) ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1007/s11661-009-0045-5
  3. Abstract:
  4. Abstract Sintering response and phase formation during sintering of WC-Co/316L stainless steel composites produced by assembling of powder injection molding (PIM) parts were studied. It is shown that during cosintering a significant mismatch strain (> 4 pct) is developed in the temperature range of 1080° C to 1350° C. This mismatch strain induces biaxial stresses at the interface, leading to interface delamination. Experimental results revealed that sintering at a heating rate of 20 K/min could be used to decrease the
  5. Keywords:
  6. Dimensional stability ; Injection molding ; Intermodulation ; Intermodulation measurement ; Iron ; Liquids ; Martensitic stainless steel ; Phase interfaces ; Plastic molds ; Powder metallurgy ; Sintering ; Structure (composition) ; Surface reactions ; Tungsten carbide
  7. Source: Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science ; Volume 41, Issue 1, January 2010, Pages 233-241
  8. URL: http://link.springer.com/article/10.1007/s11661-009-0045-5#page-1