| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
| |
| Motta, Antonella |
| |
| Aletan, Dirar |
| |
| Mohamed, Tarek |
| |
| Ertürk, Emre |
| |
| Taccardi, Nicola |
| |
| Kononenko, Denys |
| |
| Petrov, R. H. | Madrid |
|
| Alshaaer, Mazen | Brussels |
|
| Bih, L. |
| |
| Casati, R. |
| |
| Muller, Hermance |
| |
| Kočí, Jan | Prague |
|
| Šuljagić, Marija |
| |
| Kalteremidou, Kalliopi-Artemi | Brussels |
|
| Azam, Siraj |
| |
| Ospanova, Alyiya |
| |
| Blanpain, Bart |
| |
| Ali, M. A. |
| |
| Popa, V. |
| |
| Rančić, M. |
| |
| Ollier, Nadège |
| |
| Azevedo, Nuno Monteiro |
| |
| Landes, Michael |
| |
| Rignanese, Gian-Marco |
|
Holmestad, Randi
Norwegian University of Science and Technology
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (51/51 displayed)
- 2024On the precipitation and transformation kinetics of precipitationhardening steel X5CrNiCuNb16-4 in a wide range of heating and cooling ratescitations
- 2024Atomic structure of clusters and GP-zones in an Al-Mg-Si alloycitations
- 2024On the precipitation and transformation kinetics of precipitation-hardening steel X5CrNiCuNb16-4 in a wide range of heating and cooling ratescitations
- 2024Al-Cu intermetallic phase growth in hybrid metal extrusion & bonding welds exposed to isothermal annealing or direct current cycling
- 2024Accelerating precipitation hardening by natural aging in a 6082 Al-Mg-Si alloycitations
- 2024Effects of grain boundary chemistry and precipitate structure on intergranular corrosion in Al-Mg-Si alloys doped with Cu and Zncitations
- 2023Atomic Structure of Hardening Precipitates in Al-Mg-Si Alloys: Influence of Minor Additions of Cu and Zncitations
- 2023Multi-material Joining of an Aluminum Alloy to Copper, Steel, and Titanium by Hybrid Metal Extrusion & Bondingcitations
- 2022An improved modelling framework for strength and work hardening of precipitate strengthened Al–Mg–Si alloyscitations
- 2022Local mechanical properties and precipitation inhomogeneity in large-grained Al–Mg–Si alloycitations
- 2022The Effect of Small Additions of Fe and Heavy Deformation on the Precipitation in an Al–1.1Mg–0.5Cu–0.3Si At. Pct Alloycitations
- 2022On intermetallic phases formed during interdiffusion between aluminium alloys and stainless steelcitations
- 2022Influence of natural aging and ramping before artificial aging on the microstructure of two different 6xxx alloyscitations
- 2022Effect of Multiply Twinned Ag(0) Nanoparticles on Photocatalytic Properties of TiO2 Nanosheets and TiO2 Nanostructured Thin Filmscitations
- 2021Interface Microstructure and Tensile Properties of a Third Generation Aluminium-Steel Butt Weld Produced Using the Hybrid Metal Extrusion & Bonding (HYB) Processcitations
- 2021Studying GPI zones in Al-Zn-Mg alloys by 4D-STEMcitations
- 2021Effect of pre-deformation on age-hardening behaviors in an Al-Mg-Cu alloycitations
- 2021On the microstructural origins of improvements in conductivity by heavy deformation and ageing of Al-Mg-Si alloy 6101citations
- 2021Linking mechanical properties to precipitate microstructure in three Al-Mg-Si(-Cu) alloyscitations
- 2020Grain boundary structures and their correlation with intergranular corrosion in an extruded Al-Mg-Si-Cu alloycitations
- 2020Stress Corrosion Cracking in an Extruded Cu-Free Al-Zn-Mg Alloycitations
- 2020Stress Corrosion Cracking in an Extruded Cu-Free Al-Zn-Mg Alloy
- 2020First principle calculations of pressure dependent yielding in solute strengthened aluminium alloyscitations
- 2020Multislice image simulations of sheared needle‐like precipitates in an Al‐Mg‐Si alloycitations
- 2020Comparing intergranular corrosion in Al‐Mg‐Si‐Cu alloys with and without α‐Al(Fe,Mn,Cu)Si particlescitations
- 2020Copper enrichment on aluminium surfaces after electropolishing and its effect on electron imaging and diffractioncitations
- 2020Microstructural and mechanical characterisation of a second generation hybrid metal extrusion & bonding aluminium-steel butt jointcitations
- 2019Nano-scale characterisation of sheared β” precipitates in a deformed Al-Mg-Si alloycitations
- 2019In situ heating TEM observations of evolving nanoscale Al‐Mg‐Si‐Cu precipitatescitations
- 2019Precipitation in an extruded AA7003 aluminium alloy: Observations of 6xxx-type hardening phasescitations
- 2019The Effect of Elastic Strain and Small Plastic Deformation on Tensile Strength of a Lean Al–Mg–Si Alloycitations
- 2018The evolution of precipitate crystal structures in an Al-Mg-Si(-Cu) alloy studied by a combined HAADF-STEM and SPED approachcitations
- 2018The correlation between intergranular corrosion resistance and copper content in the precipitate microstructure in an AA6005A alloycitations
- 2018Lattice rotations in precipitate free zones in an Al-Mg-Si alloycitations
- 2018Crystallographic relationships of T-/S-phase aggregates in an Al–Cu–Mg–Ag alloycitations
- 2017Atomistic details of precipitates in lean Al–Mg–Si alloys with trace additions of Ag and Ge studied by HAADF-STEM and DFTcitations
- 2016Elemental electron energy loss mapping of a precipitate in a multi-component aluminium alloycitations
- 2016Assessing electron beam sensitivity for SrTiO3 and La0.7Sr0.3MnO3 using electron energy loss spectroscopycitations
- 2016Effect of polar (111)-oriented SrTiO3 on initial perovskite growthcitations
- 2016The effects and behaviour of Li and Cu alloying agents in lean Al-Mg-Si alloyscitations
- 2015A hybrid aluminium alloy and its zoo of interacting nano-precipitatescitations
- 2015Structural investigation of epitaxial LaFeO_3 thin films on (111) oriented SrTiO_3 by transmission electron microscopycitations
- 2015Structural modifications and electron beam damage in aluminium alloy precipitate θ'-Al2Cucitations
- 2014Atomic-resolution electron energy loss studies of precipitates in an Al-Mg-Si-Cu-Ag alloycitations
- 2014Aberration-corrected HAADF-STEM investigations of precipitate structures in Al-Mg-Si alloys with low Cu additionscitations
- 2014Clustering and Vacancy Behavior in High- and Low-Solute Al-Mg-Si Alloyscitations
- 2014The effects of quench rate and pre-deformation on precipitation hardening in Al–Mg–Si alloys with different Cu amountscitations
- 2013How calcium prevents precipitation hardening in Al–Mg–Si alloyscitations
- 2013Muon kinetics in heat treated Al (–Mg)(–Si) alloyscitations
- 2012Reversal of the negative natural aging effect in Al-Mg-Si alloyscitations
- 2012Probing defects in Al-Mg-Si alloys using muon spin relaxationcitations
Places of action
| Organizations | Location | People |
|---|
article
Atomic Structure of Hardening Precipitates in Al-Mg-Si Alloys: Influence of Minor Additions of Cu and Zn
Abstract
Shifting toward sustainability and low carbon emission necessitates recycling. Aluminum alloys can be recycled from postconsumer scrap with approximately 5% of the energy needed to produce the same amount of primary alloys. However, the presence of certain alloying elements, such as copper and zinc, as impurities in recycled Al-Mg-Si alloys is difficult to avoid. This work has investigated the influence of tiny concentrations of Cu (0.05 wt %) and Zn (0.06 wt %), individually and in combination, on the precipitate crystal structures in Al-Mg-Si alloys in peak aged and overaged conditions. To assess whether such concentrations can affect the hardening precipitate structures, atomic resolution high-angle annular dark-field scanning transmission electron microscopy and atom probe tomography were adopted. The results indicate that low levels of Cu or Zn have a significant influence. Both elements showed a relatively high tendency to incorporate into precipitate structures, where Cu occupies specific atomic sites, creating its own local atomic configurations. However, Zn exhibited distinct behavior through the formation of extended local areas with 2-fold symmetry and mirror planes, not previously observed in precipitates in Al-Mg-Si alloys. Incorporation of Cu and/or Zn will influence the precipitates' electrochemical potential relative to matrix- and precipitate-free zones and thus the corrosion resistance. Furthermore, the presence of Cu/Zn structures (e.g., β'Cu, Q'/C) enhances the thermal stability of these precipitates and, accordingly, the mechanical properties of the material. The results obtained from this work are highly relevant to the topic of recycling of aluminum alloys, where accumulation of certain alloying elements is almost unavoidable; thus, tight compositional control might be critical to avoid quality degradation.