Hardening precipitation and mechanical properties in new Mg–Mn–Y–Gd alloys
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Caroline Antion
, Patricia Donnadieu , Jean-Jacques Blandin , Françoise Bley , Alexis Deschamps , Catherine Tassin und Alexander Pisch
Abstract
Precipitation microstructures and mechanical properties of two new Mg–Mn–Y–Gd alloys have been studied. Small Angle X-ray Scattering and Transmission Electron Microscopy carried out on homogeneous and aged states (200°C and 250°C) have revealed Guinier–Preston zones formed from the homogeneous state at ambient temperature and first stages of precipitation consisting in DO19 type monolayer precipitates. These ultrafine precipitates show further organisation leading to the orthorhombic β′ phase. Peak-hardness microstructure is characterised by a high density of connected β′ precipitates. Overaged samples show a high level of mechanical strength and creep resistance. The related microstructure consists of stable β′ phase precipitates forming connected strings giving rise to a local strain within the matrix. Comparison with previous studies confirms the strong relationship between rare earth elements choice, precipitation microstructure and mechanical resistance.
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© 2008, Carl Hanser Verlag, Munich
Artikel in diesem Heft
- Contents
- Contents
- Editorial
- IJMR wishes all its readers and contributors a belated Happy New Year
- Basic
- Experimental study of the phase relations in the Fe–Zn–Cr system at 600°C
- Thermodynamic description of the ternary Pd–Sn–Zn system
- The morphology of nitrided iron–chromium alloys; influence of chromium content and nitrogen supersaturation
- The surface tension and density of Ag–Bi–Sn alloys
- Density and thermal expansion of liquid binary Al–Ag and Al–Cu alloys
- Hardening precipitation and mechanical properties in new Mg–Mn–Y–Gd alloys
- On recrystallization texture formation in polycrystalline fcc alloys with low stacking fault energies
- A numerical study of grain size effects on the strength and elongation of Al polycrystals using strain gradient plasticity theory
- Applied
- Thermodynamic simulation of the Bayer process
- The anisotropy of deformation for friction stir processed Mg alloy due to the existence of onion rings
- A study of the Si-phase growth mechanismin thixocast (A356) alloy during hot deformation
- Study of hydrogen absorption of aluminum melt
- Modelling of work-hardening behaviour for laser welded magnesium alloy
- Tribological behavior of short carbon fiber or hybrid with SiCp reinforced Al alloy composites
- Elevated temperature compressive behavior of Nb-22Ti-16Si-7Cr-3Al-3Ta-2Hf alloy with minor Ho addition
- Notifications
- News
Artikel in diesem Heft
- Contents
- Contents
- Editorial
- IJMR wishes all its readers and contributors a belated Happy New Year
- Basic
- Experimental study of the phase relations in the Fe–Zn–Cr system at 600°C
- Thermodynamic description of the ternary Pd–Sn–Zn system
- The morphology of nitrided iron–chromium alloys; influence of chromium content and nitrogen supersaturation
- The surface tension and density of Ag–Bi–Sn alloys
- Density and thermal expansion of liquid binary Al–Ag and Al–Cu alloys
- Hardening precipitation and mechanical properties in new Mg–Mn–Y–Gd alloys
- On recrystallization texture formation in polycrystalline fcc alloys with low stacking fault energies
- A numerical study of grain size effects on the strength and elongation of Al polycrystals using strain gradient plasticity theory
- Applied
- Thermodynamic simulation of the Bayer process
- The anisotropy of deformation for friction stir processed Mg alloy due to the existence of onion rings
- A study of the Si-phase growth mechanismin thixocast (A356) alloy during hot deformation
- Study of hydrogen absorption of aluminum melt
- Modelling of work-hardening behaviour for laser welded magnesium alloy
- Tribological behavior of short carbon fiber or hybrid with SiCp reinforced Al alloy composites
- Elevated temperature compressive behavior of Nb-22Ti-16Si-7Cr-3Al-3Ta-2Hf alloy with minor Ho addition
- Notifications
- News