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Comparison between conventional and unconventional methods of sintering Inconel 718 MIM samples

  • : Olivier Dugauguez1, Frederic Bernard2, Jose Manuel Torralba3, Thierry Barriere1, Jean-Claude Gelin1
  • : 1Université de Franche-Comté, Femto-st, 2Laboratoire Interdisciplinaire Carnot de Bourgogne, 3IMDEA Materials Institute, Universidad Carlos III de Madrid
  • : PDF Download
  • : 2015

Abstract

The powder injection moulding needs four steps. The first is the mixing of polymer with the metallic powder. The feedstock obtained is then injected into a mould. The sample obtained is the debinded by solvent or thermally. The last step is the sintering of the powder by conventional heating. The project is to find another way to sinter the green samples in order to improve the kinetic of the process while keeping or improving the mechanical performances of the component. In this way, different unconventional ways of sintering have been investigated such as Spark Plasma sintering and Hot Isostatic Pressing. The objectives of the paper is to present the effects of the different methods on the microstructure and the mechanical properties in comparison with the time and energy consumed to produce them. Inconel 718 has been chosen for this study because he is one of the most used super-alloy in the industry, allowing comparison with the actual methods.

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