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Experimental Invest...
Experimental Investigations in the Processing of AISI H11 Powder Blends Enriched with Tungsten Carbide Nanoparticles for the Additive Manufacturing of Tailored Hot Working Tools in the Directed Energy Deposition (DED-LB/M)—Impact of Tungsten Carbide Nanoparticles on Microstructural and Mechanical Characteristics
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- Hentschel, Oliver (författare)
- Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany
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- Kohlstruck, Jan (författare)
- Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany
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- Vetter, Johannes (författare)
- Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany
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- Wittmann, Alexander (författare)
- Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany
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- Krakhmalev, Pavel, Professor, 1973- (författare)
- Karlstads universitet,Institutionen för ingenjörsvetenskap och fysik (from 2013)
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- Dimitrios, Nikas (författare)
- Karlstads universitet,Institutionen för ingenjörsvetenskap och fysik (from 2013)
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- Schmidt, Michael (författare)
- Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany
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(creator_code:org_t)
- MDPI, 2024
- 2024
- Engelska.
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Ingår i: Metals. - : MDPI. - 2075-4701. ; 14:2, s. 188-188
- Relaterad länk:
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https://doi.org/10.3...
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https://kau.diva-por... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.3...
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Abstract
Ämnesord
Stäng
- In this study, the DED-LB/M process of AISI H11 tool steel powder blends modified by adding WC nanoparticles (WC-np) in concentrations of 1, 2.5 and 5 wt.-% was the object of scientific investigations. For this, 30-layer cuboid specimens were manufactured. The overall scientific aim was to examine how the WC-np interact with the steel melt and in the end, influence the processability, microstructure and mechanical properties of produced specimens. The examinations were carried out on both as-built and thermally post-processed specimens. An advanced microstructural analysis (SEM, EDS, EBSD and XRD) revealed that due to the high solubility of WC-np in the molten steel, most of the WC-np appear to have dissolved during the ongoing laser process. Furthermore, the WC-np favor a stronger distortion and finer grain size of martensite in the manufactured specimens. An increase in hardness from about 650 HV1 for the H11 specimen to 780 HV1 for the one manufactured using the powder blend containing 5 wt.-% of WC-np was observed in as-built conditions. In the same way, the compression yield strength enhanced from 1839 MPA to 2188 MPA. The hardness and strength increasing effect of WC-np remained unchanged even after heat treatments similar to those used in industry.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Bearbetnings-, yt- och fogningsteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Manufacturing, Surface and Joining Technology (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Metallurgi och metalliska material (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Metallurgy and Metallic Materials (hsv//eng)
Nyckelord
- Directed Energy Deposition (DED-LB/M)
- Additive Manufacturing
- hot work tool steel
- AISI H11
- Tungsten Carbide (WC)
- nanoparticles
- bulk forming tools
- in situ alloying
- Materialteknik
- Materials Engineering
- Materials Science
- Materialvetenskap
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- art (ämneskategori)
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