Phase transformations in non-isothermally annealed as-cast and cold-rolled AlMnScZr alloys
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Martin Vlach
Abstract
The effect of Mn addition on the microstructure, thermal and mechanical properties in as-cast and cold-rolled Al–Sc–Zr alloys was studied. Electrical resistometry, differential scanning calorimetry and microhardness measurements were used. Transmission electron microscopy, electron backscatter diffraction and X-ray diffraction of specimens quenched from temperatures of pronounced changes in resistivity helped to identify the microstructural processes responsible for resistivity changes. The distinct microhardness increase observed after annealing above ∼320°C is caused by precipitation of the Al3Sc particles. The cold-rolling prior to a heat treatment has no substantial effect on temperature position of the Al3Sc-phase precipitation. The formation of Al6Mn and/or Al6(Mn,Fe) particles is responsible for the intensive resistivity decrease of the cold-rolled materials compared to the as-cast materials. Precipitation of these particles has an insignificant effect on microhardness. The apparent activation energy for the precipitation of the Al3Sc particles was determined.
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© 2012, Carl Hanser Verlag, München
Artikel in diesem Heft
- Contents
- Contents
- Original Contributions
- Diffusivities and atomic mobilities in Cu-rich fcc Al–Cu–Mn alloys
- Phase transformations in non-isothermally annealed as-cast and cold-rolled AlMnScZr alloys
- High-temperature deformation behavior and thermal properties of an Ni30Co17Fe53 alloy
- Microstructural and mechanical properties of dual-phase steels welded using GMAW with solid and flux-cored welding wires
- Microstructure – wear performance relationship of hypoeutectic 15% Cr-2% Mo white iron
- The enhancement of wear properties of squeeze-cast A356 composites reinforced with B4C particulates
- Phase diagram of the Al–Dy–Zr ternary system at 773 K
- Calorimetric investigations of liquid gold–antimony–tin alloys
- Combustion synthesis and characterization of bulk nanostructured Ni50Al17Fe33 alloy
- Effect of sand blasting on structural, thermal, and mechanical properties of Zr58.3Cu18.8Al14.6Ni8.3 bulk metallic glass
- Studies of dynamic mass transfer at the slag–metal interface – Interfacial velocity measurements
- Structural and optical investigation of gadolinia-doped ceria powders prepared by polymer complex solution method
- Adsorption of bovine serum albumin onto titanium dioxide nanotube arrays
- CNT-based displacement sensor
- Non-covalent assembly of hybrid nanostructures of gold and palladium nanoparticles with carbon nanotubes
- Effect of solid content on performance of conductive silver paste for crystalline silicon solar cells
- Effect of inhomogeneous size and shape of graphite particles on the in-plane electrical conductivity of PP/G/CB composites
- The durability of fired brick incorporating textile factory waste ash and basaltic pumice
- DGM News
- DGM News
Artikel in diesem Heft
- Contents
- Contents
- Original Contributions
- Diffusivities and atomic mobilities in Cu-rich fcc Al–Cu–Mn alloys
- Phase transformations in non-isothermally annealed as-cast and cold-rolled AlMnScZr alloys
- High-temperature deformation behavior and thermal properties of an Ni30Co17Fe53 alloy
- Microstructural and mechanical properties of dual-phase steels welded using GMAW with solid and flux-cored welding wires
- Microstructure – wear performance relationship of hypoeutectic 15% Cr-2% Mo white iron
- The enhancement of wear properties of squeeze-cast A356 composites reinforced with B4C particulates
- Phase diagram of the Al–Dy–Zr ternary system at 773 K
- Calorimetric investigations of liquid gold–antimony–tin alloys
- Combustion synthesis and characterization of bulk nanostructured Ni50Al17Fe33 alloy
- Effect of sand blasting on structural, thermal, and mechanical properties of Zr58.3Cu18.8Al14.6Ni8.3 bulk metallic glass
- Studies of dynamic mass transfer at the slag–metal interface – Interfacial velocity measurements
- Structural and optical investigation of gadolinia-doped ceria powders prepared by polymer complex solution method
- Adsorption of bovine serum albumin onto titanium dioxide nanotube arrays
- CNT-based displacement sensor
- Non-covalent assembly of hybrid nanostructures of gold and palladium nanoparticles with carbon nanotubes
- Effect of solid content on performance of conductive silver paste for crystalline silicon solar cells
- Effect of inhomogeneous size and shape of graphite particles on the in-plane electrical conductivity of PP/G/CB composites
- The durability of fired brick incorporating textile factory waste ash and basaltic pumice
- DGM News
- DGM News