Details
| Original language | English |
|---|---|
| Title of host publication | METAL 2019 |
| Subtitle of host publication | 28th International Conference on Metallurgy and Materials, Conference Proceedings |
| Pages | 1369-1374 |
| Number of pages | 6 |
| ISBN (electronic) | 9788087294925 |
| Publication status | Published - 2019 |
| Event | 28th International Conference on Metallurgy and Materials, METAL 2019 - Brno, Czech Republic Duration: 22 May 2019 → 24 May 2019 |
Abstract
The ever-increasing demand for weight reduction of manufactured parts is leading to the replacement of steel with light metals such as aluminum and magnesium. However, light metals are at times unable to withstand high tribological, thermal or mechanical loads. This leads to an application of metal-matrix-composites (MMC) that possess the advantages of light metals (low weight and high ductility), as well as the characteristics of the reinforcing phase (high hardness, high strength and good wear resistance). To manufacture the MMC components, metal powders were shaped in a pressing process and further densified during a subsequent sintering phase. The residual porosity within the produced parts can be reduced by means of a subsequent sinterforging operation. In this paper, cylindrical partially particle-reinforced specimens, with a radially layered structure, were manufactured by two-sided powder pressing and sintering. A subsequent forging operation was carried out to eliminate the minimal porosity. Different process parameters (forming temperature, true strain and dilation rate) were varied to investigate their effects on the density and structural bonding of the partially particle-reinforced material system. Therefore, the sinterforging process upsetting was carried out. Subsequently, the particle-reinforced parts were characterised by metallographic analysis and hardness measurements. The results show that cracks and defects in the layer system of partially particle-reinforced powder compacts can be repaired using sinter forging.
Keywords
- Aluminum, Metal-matrix-composites, Powder metallurgy, Sinterforging
ASJC Scopus subject areas
- Materials Science(all)
- Surfaces, Coatings and Films
- Engineering(all)
- Mechanics of Materials
- Materials Science(all)
- Metals and Alloys
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METAL 2019: 28th International Conference on Metallurgy and Materials, Conference Proceedings. 2019. p. 1369-1374.
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Investigation of a sinterforging process for radially particle reinforced sintered MMC-components
AU - Behrens, Bernd Arno
AU - Malik, Irfan Yousaf
AU - Ross, Ingo
N1 - Funding information: The results presented are based on the framework of the research project “Hot Forging of partially particle-reinforced sintered components” under the project number 283970253. The authors would like to thank the German Research Foundation (DFG) for financial support.
PY - 2019
Y1 - 2019
N2 - The ever-increasing demand for weight reduction of manufactured parts is leading to the replacement of steel with light metals such as aluminum and magnesium. However, light metals are at times unable to withstand high tribological, thermal or mechanical loads. This leads to an application of metal-matrix-composites (MMC) that possess the advantages of light metals (low weight and high ductility), as well as the characteristics of the reinforcing phase (high hardness, high strength and good wear resistance). To manufacture the MMC components, metal powders were shaped in a pressing process and further densified during a subsequent sintering phase. The residual porosity within the produced parts can be reduced by means of a subsequent sinterforging operation. In this paper, cylindrical partially particle-reinforced specimens, with a radially layered structure, were manufactured by two-sided powder pressing and sintering. A subsequent forging operation was carried out to eliminate the minimal porosity. Different process parameters (forming temperature, true strain and dilation rate) were varied to investigate their effects on the density and structural bonding of the partially particle-reinforced material system. Therefore, the sinterforging process upsetting was carried out. Subsequently, the particle-reinforced parts were characterised by metallographic analysis and hardness measurements. The results show that cracks and defects in the layer system of partially particle-reinforced powder compacts can be repaired using sinter forging.
AB - The ever-increasing demand for weight reduction of manufactured parts is leading to the replacement of steel with light metals such as aluminum and magnesium. However, light metals are at times unable to withstand high tribological, thermal or mechanical loads. This leads to an application of metal-matrix-composites (MMC) that possess the advantages of light metals (low weight and high ductility), as well as the characteristics of the reinforcing phase (high hardness, high strength and good wear resistance). To manufacture the MMC components, metal powders were shaped in a pressing process and further densified during a subsequent sintering phase. The residual porosity within the produced parts can be reduced by means of a subsequent sinterforging operation. In this paper, cylindrical partially particle-reinforced specimens, with a radially layered structure, were manufactured by two-sided powder pressing and sintering. A subsequent forging operation was carried out to eliminate the minimal porosity. Different process parameters (forming temperature, true strain and dilation rate) were varied to investigate their effects on the density and structural bonding of the partially particle-reinforced material system. Therefore, the sinterforging process upsetting was carried out. Subsequently, the particle-reinforced parts were characterised by metallographic analysis and hardness measurements. The results show that cracks and defects in the layer system of partially particle-reinforced powder compacts can be repaired using sinter forging.
KW - Aluminum
KW - Metal-matrix-composites
KW - Powder metallurgy
KW - Sinterforging
UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85079419760&origin=inward
U2 - 10.37904/metal.2019.758
DO - 10.37904/metal.2019.758
M3 - Conference contribution
AN - SCOPUS:85079419760
SP - 1369
EP - 1374
BT - METAL 2019
T2 - 28th International Conference on Metallurgy and Materials, METAL 2019
Y2 - 22 May 2019 through 24 May 2019
ER -