Benjamin Klusemann
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View article: Analysis of precipitation kinetics during refill friction stir spot welding and post-weld heat treatments in AA7050 using SAXS and numerical modeling
Analysis of precipitation kinetics during refill friction stir spot welding and post-weld heat treatments in AA7050 using SAXS and numerical modeling Open
The impact of the refill friction stir spot welding process (refill FSSW) on precipitates in a high-strength AA7050-T7651 alloy is studied. Cross-sections of the welded samples are analyzed via small-angle X-ray scattering (SAXS), yielding…
View article: Precipitation distribution in mechanically alloyed Al-Cu-Li powders processed via friction consolidation
Precipitation distribution in mechanically alloyed Al-Cu-Li powders processed via friction consolidation Open
Friction consolidation (FC) was deployed to illustrate the mechanical alloying effect of Al-Cu, Al-Li, and pure Cu powder through phase transformation behavior. A progressive material flow from the periphery to the center of the FC die was…
View article: Precipitation distribution in mechanically alloyed Al-Cu-Li powders processed via friction consolidation
Precipitation distribution in mechanically alloyed Al-Cu-Li powders processed via friction consolidation Open
Friction consolidation (FC) was deployed to illustrate the mechanical alloying effect of Al-Cu, Al-Li, and pure Cu powder through phase transformation behavior. A progressive material flow from the periphery to the center of the FC die was…
View article: GPU-accelerated meshfree computational framework for modeling the friction surfacing process
GPU-accelerated meshfree computational framework for modeling the friction surfacing process Open
This study presents a meshfree framework for modeling the friction surfacing (FS) process using the smoothed particle hydrodynamics (SPH) method. The framework leverages GPU computing to address the computational demands of SPH, incorporat…
View article: GPU-accelerated meshfree computational framework for modeling the friction surfacing process
GPU-accelerated meshfree computational framework for modeling the friction surfacing process Open
This study presents a meshfree framework for modeling the friction surfacing (FS) process using the smoothed particle hydrodynamics (SPH) method. The framework leverages GPU computing to address the computational demands of SPH, incorporat…
View article: Additive friction stir deposition vs. friction surfacing: Comparison of friction stir-based approaches for groove repair of high strength aluminum alloys
Additive friction stir deposition vs. friction surfacing: Comparison of friction stir-based approaches for groove repair of high strength aluminum alloys Open
Friction stir-based solid-state layer deposition techniques show considerable potential as additive manufacturing approach but also for repair applications. Researchers investigate different techniques, where the layer deposition is mainly…
View article: A multi-component phase-field model for T1 precipitates in Al–Cu–Li alloys
A multi-component phase-field model for T1 precipitates in Al–Cu–Li alloys Open
In this study, the role of elastic and interfacial energies in the shape evolution of T1 precipitates in Al–Cu–Li alloys is investigated using phase-field modeling. We employ a formulation considering the stoichiometric nature of the preci…
View article: Additive friction stir deposition vs. friction surfacing: Comparison of friction stir-based approaches for groove repair of high strength aluminum alloys
Additive friction stir deposition vs. friction surfacing: Comparison of friction stir-based approaches for groove repair of high strength aluminum alloys Open
Friction stir-based solid-state layer deposition techniques show considerable potential as additive manufacturing approach but also for repair applications. Researchers investigate different techniques, where the layer deposition is mainly…
View article: Three-dimensional mapping of residual stresses and crack propagation in refill friction stir spot welded aluminium samples via synchrotron X-ray diffraction and X-ray micro-computed tomography
Three-dimensional mapping of residual stresses and crack propagation in refill friction stir spot welded aluminium samples via synchrotron X-ray diffraction and X-ray micro-computed tomography Open
Refill Friction Stir Spot Welding (refill FSSW) shows strong potential to replace riveting in the aerospace industry. However, the complex deformation and thermal effects associated with this process lead to residual stresses that may infl…
View article: A multi-component phase-field model for T<sub>1</sub> precipitates in Al–Cu–Li alloys
A multi-component phase-field model for T<sub>1</sub> precipitates in Al–Cu–Li alloys Open
In this study, the role of elastic and interfacial energies in the shape evolution of T 1 precipitates in Al–Cu–Li alloys is investigated using phase-field modeling. We employ a formulation considering the stoichiometric nature of the prec…
View article: Combining fusion-based and solid-state additive manufacturing: Investigation of additive DED structures with friction surfacing interlayer
Combining fusion-based and solid-state additive manufacturing: Investigation of additive DED structures with friction surfacing interlayer Open
Fusion-based additive manufacturing (AM) techniques face some challenges for aluminium due to the necessity of material melting resulting in insufficient bonding. The present work provides a novel insight into the combination of fusion-bas…
View article: Liquid metal embrittlement in solid-state welding of Mg/galvanized steel
Liquid metal embrittlement in solid-state welding of Mg/galvanized steel Open
The phenomenon of liquid metal embrittlement (LME) poses safety concerns for welded joints in the manufacturing field. In present study, LME was observed in refill friction stir spot welding (refill FSSW) of dissimilar magnesium (Mg) to ga…
View article: Friction stir welding of the dissimilar materials AA6082 and AISI316 for marine applications
Friction stir welding of the dissimilar materials AA6082 and AISI316 for marine applications Open
Worldwide, shipyards/manufacturers of cruise and roll-on/roll-off vessels have adopted steel-aluminium joints made by explosion welding to join steel plates of the hull to aluminium plates of the decks. This work illustrates that the envir…
View article: Friction stir lap weld-brazing of AA7050 aluminium alloy to Ti6Al4V titanium alloy – Limitations in dissimilar metal joining
Friction stir lap weld-brazing of AA7050 aluminium alloy to Ti6Al4V titanium alloy – Limitations in dissimilar metal joining Open
Joining of high-strength aluminium and titanium alloys gives new opportunities for cost- and energy-efficient designs especially in the transportation industry. In the present study, friction stir lap joining of AA7050 and Ti6Al4V was cond…
View article: Effect of consumable stud microstructure on friction surfacing: Comparison between friction extruded and hot extruded AA2024 studs
Effect of consumable stud microstructure on friction surfacing: Comparison between friction extruded and hot extruded AA2024 studs Open
Friction surfacing is a solid-state layer deposition process that shows high potential as a coating and an additive manufacturing technique for aluminum alloys. Avoiding high temperatures, it does not suffer common challenges of fusion-bas…
View article: Fatigue life enhancement via residual stress engineering due to local forming during refill friction stir spot welding
Fatigue life enhancement via residual stress engineering due to local forming during refill friction stir spot welding Open
Refill friction stir spot welding is a promising joining process in lightweight design. As lightweight structures react sensitively to cyclic loads, the fatigue life of the joints are of particular interest. In previous studies, attempts h…
View article: Generative 3D reconstruction of Ti-6Al-4V basketweave microstructures by optimization of differentiable microstructural descriptors
Generative 3D reconstruction of Ti-6Al-4V basketweave microstructures by optimization of differentiable microstructural descriptors Open
We present a methodology for the generative reconstruction of 3D microstructures from 2D cross-sectional electron backscatter diffraction micrographs. The method is applied to Ti-6Al-4V processed by laser powder bed fusion, where a high am…
View article: The ESAFORM benchmark 2023: interlaboratory comparison benchmark for the characterization of microstructural grain growth and dynamic recrystallization kinetics of a single-phase Ni-base superalloy
The ESAFORM benchmark 2023: interlaboratory comparison benchmark for the characterization of microstructural grain growth and dynamic recrystallization kinetics of a single-phase Ni-base superalloy Open
This paper presents an extensive benchmark study conducted across eight European research centres, focusing on the high-temperature testing of the Alloy 625 nickel-based superalloy to evaluate its flow behaviour and microstructural evoluti…
View article: Generative 3D reconstruction of Ti-6Al-4V basketweave microstructures by optimization of differentiable microstructural descriptors
Generative 3D reconstruction of Ti-6Al-4V basketweave microstructures by optimization of differentiable microstructural descriptors Open
We present a methodology for the generative reconstruction of 3D microstructures from 2D cross-sectional electron backscatter diffraction micrographs. The method is applied to Ti-6Al-4V processed by laser powder bed fusion, where a high am…
View article: Enhanced dissimilar aluminum alloy joints using 0.1 mm offset in refill friction stir spot welding
Enhanced dissimilar aluminum alloy joints using 0.1 mm offset in refill friction stir spot welding Open
5A06-O and 2219-T87 aluminum alloys are promising candidates for propellant tanks. In this study, refill friction stir spot welding (refill FSSW) with a 0.1 mm offset was applied to produce defect-free 5A06-O/2219-T87 welds. A Box-Behnken …
View article: La-Ni-H metal hydride system aging effects identification
La-Ni-H metal hydride system aging effects identification Open
One of the most commonly used materials for sorption compression in space applications is based on the La-Ni-H system. The degradation of the material properties and, therefore, the system lifetime is of great importance for the final succ…
View article: Friction surfacing of aluminum alloys on Ti6Al4V - Investigation of process parameters, material deposition behavior and bonding mechanisms
Friction surfacing of aluminum alloys on Ti6Al4V - Investigation of process parameters, material deposition behavior and bonding mechanisms Open
This study addresses a detailed investigation of friction surfacing (FS) process parameters for two materials with low metallurgical compatibility, i.e. Al and Ti, to achieve successful depositions, representing a very challenging task. Th…
View article: A multi-component phase-field model for T1 precipitates in Al-Cu-Li alloys
A multi-component phase-field model for T1 precipitates in Al-Cu-Li alloys Open
In this study, the role of elastic and interfacial energies in the shape evolution of T1 precipitates in Al-Cu-Li alloys is investigated using phase-field modeling. We employ a formulation considering the stoichiometric nature of the preci…
View article: Mechanical behavior, microstructural evolution and texture analysis of AA2024-T351 processed by multi-layer friction surfacing with high build rates
Mechanical behavior, microstructural evolution and texture analysis of AA2024-T351 processed by multi-layer friction surfacing with high build rates Open
Solid-state additive manufacturing (AM) processes such as multi-layer friction surfacing (MLFS) can overcome typical disadvantages of fusion-based AM such as high residual stresses, porosity or hot cracking. The tool-less process setup of …
View article: Thermal Degradation and Decomposition of FR4 Laminate PCB Substrates Joined by Friction Riveting
Thermal Degradation and Decomposition of FR4 Laminate PCB Substrates Joined by Friction Riveting Open
This study investigates the thermal degradation and chemical transformations of friction-riveted glass fiber-reinforced epoxy laminate (FR4) printed circuit boards (PCBs) with different copper configurations. The primary objective is to id…