Investigation of microstructural and mechanical properties in AA2024-T351 multi-layer friction surfacing
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In: Surface and Coatings Technology, Vol. 480, 130610, 30.03.2024.
Research output: Journal contributions › Journal articles › Research › peer-review
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TY - JOUR
T1 - Investigation of microstructural and mechanical properties in AA2024-T351 multi-layer friction surfacing
AU - Hoffmann, Marius
AU - Roos, Arne
AU - Klusemann, Benjamin
N1 - Funding Information: The work was carried out under the auspices of the AVAIL-DE project (grant number 20W1906A ), which is funded by the German Federal Ministry of Economic Affairs and Climate Action (BMWK) under the LuFo VI-1 program. Publisher Copyright: © 2024 The Author(s)
PY - 2024/3/30
Y1 - 2024/3/30
N2 - This study on multi-layer friction surfacing (MLFS) as a process for additive manufacturing focuses on the influence of process parameters on the resulting microstructural properties for the precipitation-hardenable Al-Cu-Mg alloy AA2024. The energy input, which is determined by the process parameters, is correlated with the process temperature, which has a direct influence on the microstructure and mechanical properties. At higher process temperatures, e.g. at 450.1∘C, larger average grain sizes, i.e. 2.5 μm, were observed in the deposited material compared to lower temperatures, i.e. 1.2 μm at 380.6∘C. At the same time, hardness (109.2 HV0.1 ↔ 115.7 HV0.1) and ultimate tensile strength (360.8 MPa ↔ 423.3 MPa) were lower at higher temperatures, in particular due to a pronounced overaging. In terms of overall mechanical behavior, the interfaces between the first layer and the substrate are the weak points of MLFS, as they exhibit lower tensile strength compared to the interfaces between the layers. Within the MLFS, the interfaces have a slightly higher hardness, which can be attributed to locally smaller grains.
AB - This study on multi-layer friction surfacing (MLFS) as a process for additive manufacturing focuses on the influence of process parameters on the resulting microstructural properties for the precipitation-hardenable Al-Cu-Mg alloy AA2024. The energy input, which is determined by the process parameters, is correlated with the process temperature, which has a direct influence on the microstructure and mechanical properties. At higher process temperatures, e.g. at 450.1∘C, larger average grain sizes, i.e. 2.5 μm, were observed in the deposited material compared to lower temperatures, i.e. 1.2 μm at 380.6∘C. At the same time, hardness (109.2 HV0.1 ↔ 115.7 HV0.1) and ultimate tensile strength (360.8 MPa ↔ 423.3 MPa) were lower at higher temperatures, in particular due to a pronounced overaging. In terms of overall mechanical behavior, the interfaces between the first layer and the substrate are the weak points of MLFS, as they exhibit lower tensile strength compared to the interfaces between the layers. Within the MLFS, the interfaces have a slightly higher hardness, which can be attributed to locally smaller grains.
KW - AA2024
KW - Mechanical property
KW - Microstructure
KW - Multi-layer friction surfacing
KW - Precipitate
KW - Process parameter influence
KW - Engineering
UR - http://www.scopus.com/inward/record.url?scp=85186768940&partnerID=8YFLogxK
U2 - 10.1016/j.surfcoat.2024.130610
DO - 10.1016/j.surfcoat.2024.130610
M3 - Journal articles
AN - SCOPUS:85186768940
VL - 480
JO - Surface and Coatings Technology
JF - Surface and Coatings Technology
SN - 0257-8972
M1 - 130610
ER -