Proceedings of the Korean Powder Metallurgy Institute Conference (한국분말야금학회:학술대회논문집)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Effect of Residual Carbon on the Microstructure Evolution during the Sintering of M2 HSS Parts Shaping by Metal Injection Moulding Process

  • Herranz, G. (Materials Science Area, Escuela Tecnica Superior de Ingenieros Industriales, Universidad de Castilla-La Mancha) ;
  • Levenfeld, B. (Materials Science and Engineering Department. Escuela Politecnica Superior. Universidad Carlos III de Madrid. Avda. Universidad) ;
  • Varez, A. (Materials Science and Engineering Department. Escuela Politecnica Superior. Universidad Carlos III de Madrid. Avda. Universidad)
  • Published : 2006.09.24
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Abstract

In this present investigation, Metal Injection Moulding (MIM) of M2 High Speed Steel (HSS) parts using a wax-High Density Polyethylene (HDPE) binder is shown. The elimination of organic binder was carried out by thermal debinding under inert atmosphere. In order to keep carbon in the sample that could improve the sintering process, incomplete debinding was performed between 450 and $600^{\circ}C$. The specimens were sintered at temperatures between 1210 and $1280^{\circ}C$ in high vacuum atmosphere, obtaining the 98% of the theoretical density. In the samples with higher residual carbon content, the sintering window was extended up to 20 degrees and the optimum temperature was lower.

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