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Sintering Behavior in Steels containing New Alloying Systems

Objective

Powder Metallurgy (PM) is a Sustainable Manufacturing Technique which allows producing cost effective, near-net-shape metallic products by die-pressing metal powder followed by sintering at elevated temperature to consolidate the material. In the last years, the increasing cost and volatility in prices of the common alloying elements (Cu, Ni and Mo), demands the research of new alloying alternatives to maintain a competitive position. This work considers the possibility of introducing elements such as Mn and Si, extremely effective for improving properties but very sensitive to oxidation. Previous studies have shown the potential good properties of materials produced by mixing plain iron base powder with small amounts of an Fe-Mn-Si master alloy. However, in order for these master alloys to become a real alternative, they still need to gain the credibility of the PM-users. This project is aimed to define optimum conditions for processing steels containing Fe-Mn-Si, providing enough experimental data to evaluate the robustness of the final product. Firstly, oxidation/reduction reactions between solid and gaseous phases will be studied with advanced thermal analysis techniques coupled with mass spectroscopy. Secondly, sintering conditions will be optimized, maximizing properties while reducing cost. Evaluation of mechanical properties and fracture mechanisms will show the actual effect of oxides on mechanical properties to decide whether or not is worth improving the processing conditions to aim complete reduction of oxides. The final step is a study of robustness where a number of samples will be sintered and tested after performing deviations from the optimum conditions. The aim is to evaluate the sensitivity of the product to changes in the process. The results from this project are expected to position Fe-Mn-Si master alloys as a real option in the PM-market, by enforcing their reliability and providing suitable processing-guidelines to the PM parts manufacturers.

Field of science

  • /natural sciences/chemical sciences/analytical chemistry/spectroscopy
  • /natural sciences/chemical sciences/inorganic chemistry/inorganic compounds
  • /engineering and technology/materials engineering/metallurgy
  • /natural sciences/chemical sciences/electrochemistry/electrolysis
  • /natural sciences/chemical sciences/analytical chemistry/calorimetry

Call for proposal

FP7-PEOPLE-2013-IEF
See other projects for this call

Funding Scheme

MC-IEF - Intra-European Fellowships (IEF)

Coordinator

TECHNISCHE UNIVERSITAET WIEN
Address
Karlsplatz 13
1040 Wien
Austria
Activity type
Higher or Secondary Education Establishments
EU contribution
€ 186 783,60
Administrative Contact
Herbert Danninger (Prof.)