Details
| Original language | English |
|---|---|
| Title of host publication | 31st International Conference on Metallurgy and Materials, METAL 2022 |
| Pages | 639-644 |
| Number of pages | 6 |
| ISBN (electronic) | 9788088365068 |
| Publication status | Published - 30 Jun 2022 |
| Event | 31st International Conference on Metallurgy and Materials, METAL 2022 - Brno, Czech Republic Duration: 18 May 2022 → 19 May 2022 |
Abstract
In the conventional powder metallurgy (PM) process route, finished components are produced from metallic powder materials by pressing at room temperature followed by pressureless sintering in a furnace. This simple method for fast and cost-effective processing is not suitable for y-based titanium aluminides. Due to their brittleness, these cannot be compacted in the conventional way. In order to qualify this group of alloys for the PM route, a possible solution is the addition of elemental titanium or aluminum powder. In this study, the basis is commercially available pre-alloyed TiAI44-4Nb-0.7Mo-0.1B (TNM) powder with high application potential for example in the aerospace industry. Investigations are carried out to determine the influence of different admixtures of elemental powders on the compaction result and the resulting mechanical properties. The TNM powder is mixed with pure titanium and aluminum powders and pressed to a compact using graphite as tool lubricant. The results show that the admixture of elemental powders enables the consolidation of TNM powder. However, depending on the load applied, a certain minimum proportion of the respective elemental powder is necessary to produce a compact. Furthermore, a significant influence on the relative density as well as the strength of the pressed product can be observed.
Keywords
- mechanical properties, Powder compacting, powder mixture, TiAl powder
ASJC Scopus subject areas
- Engineering(all)
- Mechanics of Materials
- Materials Science(all)
- Metals and Alloys
- Materials Science(all)
- Surfaces, Coatings and Films
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31st International Conference on Metallurgy and Materials, METAL 2022. 2022. p. 639-644.
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
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TY - GEN
T1 - Investigations on the consolidation of TNM powder by admixing different elemental powders
AU - Heymann, Adrian
AU - Peddinghaus, Julius
AU - Brunotte, Kai
AU - Behrens, Bernd Arno
N1 - Funding Information: Funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) - Project-ID 394563137 - SFB 1368.
PY - 2022/6/30
Y1 - 2022/6/30
N2 - In the conventional powder metallurgy (PM) process route, finished components are produced from metallic powder materials by pressing at room temperature followed by pressureless sintering in a furnace. This simple method for fast and cost-effective processing is not suitable for y-based titanium aluminides. Due to their brittleness, these cannot be compacted in the conventional way. In order to qualify this group of alloys for the PM route, a possible solution is the addition of elemental titanium or aluminum powder. In this study, the basis is commercially available pre-alloyed TiAI44-4Nb-0.7Mo-0.1B (TNM) powder with high application potential for example in the aerospace industry. Investigations are carried out to determine the influence of different admixtures of elemental powders on the compaction result and the resulting mechanical properties. The TNM powder is mixed with pure titanium and aluminum powders and pressed to a compact using graphite as tool lubricant. The results show that the admixture of elemental powders enables the consolidation of TNM powder. However, depending on the load applied, a certain minimum proportion of the respective elemental powder is necessary to produce a compact. Furthermore, a significant influence on the relative density as well as the strength of the pressed product can be observed.
AB - In the conventional powder metallurgy (PM) process route, finished components are produced from metallic powder materials by pressing at room temperature followed by pressureless sintering in a furnace. This simple method for fast and cost-effective processing is not suitable for y-based titanium aluminides. Due to their brittleness, these cannot be compacted in the conventional way. In order to qualify this group of alloys for the PM route, a possible solution is the addition of elemental titanium or aluminum powder. In this study, the basis is commercially available pre-alloyed TiAI44-4Nb-0.7Mo-0.1B (TNM) powder with high application potential for example in the aerospace industry. Investigations are carried out to determine the influence of different admixtures of elemental powders on the compaction result and the resulting mechanical properties. The TNM powder is mixed with pure titanium and aluminum powders and pressed to a compact using graphite as tool lubricant. The results show that the admixture of elemental powders enables the consolidation of TNM powder. However, depending on the load applied, a certain minimum proportion of the respective elemental powder is necessary to produce a compact. Furthermore, a significant influence on the relative density as well as the strength of the pressed product can be observed.
KW - mechanical properties
KW - Powder compacting
KW - powder mixture
KW - TiAl powder
UR - http://www.scopus.com/inward/record.url?scp=85144125560&partnerID=8YFLogxK
U2 - 10.37904/metal.2022.4428
DO - 10.37904/metal.2022.4428
M3 - Conference contribution
AN - SCOPUS:85144125560
SP - 639
EP - 644
BT - 31st International Conference on Metallurgy and Materials, METAL 2022
T2 - 31st International Conference on Metallurgy and Materials, METAL 2022
Y2 - 18 May 2022 through 19 May 2022
ER -