TY - GEN
T1 - Sinter-forging of a graded MMC wear component
AU - Behrens, Bernd Arno
AU - Bonhage, Martin
AU - Ursinus, Jonathan
N1 - Funding information:
The presented results are based on the research project “Development of a wear resistant and stress adapted modular forming tool, manufactured out of a ceramics reinforced metal matrix composite material (MMC), for the use in hot forging industry”, Project number 312033221. The authors would like to thank the German Research Foundation (DFG) for the financial support.
PY - 2019/11/4
Y1 - 2019/11/4
N2 - Metal Matrix Composites (MMC) combined with the concept of Functionally Graded Materials (FGM) offer potential to adjust the material properties based on the local load conditions. In this study, a sinter-forging process was deployed to produce an MMC wear component, consisting of a steel matrix and Fused Tungsten Carbide (FTC) particles, for later use in a hot forging tool. A low alloyed carbon steel powder and a high-speed steel powder (similar to HS 6-5-2) were processed. A graded hard phase concentration was generated by stacking layers of increasing hard phase concentration (max. 10 vol.%), before the pressing of the powder specimens. After pressing, the specimens were sintered and then forged to near full density. Metallographic imaging was used to display the hard phase gradient and to identify the microstructure of the components. The dissolution of the tungsten carbides during sintering was also investigated by Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray spectroscopy (EDX). The sinter-forged components showed a dense microstructure with embedded hard phases. The introduced gradient structure was not altered by the forging operation and the components seem promising for the planned use as a wear component in hot forming tools.
AB - Metal Matrix Composites (MMC) combined with the concept of Functionally Graded Materials (FGM) offer potential to adjust the material properties based on the local load conditions. In this study, a sinter-forging process was deployed to produce an MMC wear component, consisting of a steel matrix and Fused Tungsten Carbide (FTC) particles, for later use in a hot forging tool. A low alloyed carbon steel powder and a high-speed steel powder (similar to HS 6-5-2) were processed. A graded hard phase concentration was generated by stacking layers of increasing hard phase concentration (max. 10 vol.%), before the pressing of the powder specimens. After pressing, the specimens were sintered and then forged to near full density. Metallographic imaging was used to display the hard phase gradient and to identify the microstructure of the components. The dissolution of the tungsten carbides during sintering was also investigated by Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray spectroscopy (EDX). The sinter-forged components showed a dense microstructure with embedded hard phases. The introduced gradient structure was not altered by the forging operation and the components seem promising for the planned use as a wear component in hot forming tools.
KW - Functionally graded materials
KW - Metal matrix composites
KW - Powder metallurgy
KW - Sinter-forging
UR - https://www.scopus.com/pages/publications/85079432092
U2 - 10.37904/metal.2019.710
DO - 10.37904/metal.2019.710
M3 - Conference contribution
AN - SCOPUS:85079432092
T3 - Metal 2019 Conference Proceedings
SP - 556
EP - 561
BT - Proceedings 28th International Conference on Metallurgy and Materials
PB - TANGER Ltd.
T2 - 28th International Conference on Metallurgy and Materials, METAL 2019
Y2 - 22 May 2019 through 24 May 2019
ER -