Journal ArticleDOI
A study of stress-corrosion in Al-Zn-Mg alloys
I. T. Taylor,R. L. Edgar +1 more
- Vol. 2, Iss: 3, pp 833-839
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In this article, a study of Al-Zn-Mg alloys was undertaken to establish the specific combination of mechanical and thermal conditions which are necessary for stress-corrosion susceptibility to occur.Abstract:
This study of Al-Zn-Mg alloys was undertaken to establish the specific combination of mechanical and thermal conditions which is necessary for stress-corrosion susceptibility to occur in these alloys. The work included a study by electron transmission microscopy of the microstructure of this alloy system. A new mechanism is proposed to account for the observations made. It suggests that the high corrosion potential at grain boundaries in stress-corrosion susceptibile Al-Zn-Mg alloys is due to segregation of zinc and magnesium. By taking precautions to reduce this segregation, the stress-corrosion life can be increased.read more
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Stress corrosion cracking behaviour of 7xxx aluminum alloys: A literature review
TL;DR: In this paper, the effect of constituent alloying elements on the response of microstructural variation in various heat-treated conditions on SCC behavior was analyzed and a review was made for improving the SCC resistance using thermomechanical treatments and by surface modifications of 7xxx alloys.
Journal ArticleDOI
Effects of Sc and Zr microalloying additions and aging time at 120 °C on the corrosion behaviour of an Al–Zn–Mg alloy
TL;DR: In this paper, a microalloyed Al-Zn-Mg alloy with 0.25% Sc and 0.10% Zr was shown to exhibit high mechanical properties and admirable corrosion resistance.
Journal ArticleDOI
The role of magnesium segregation in the intergranular stress corrosion cracking of aluminium alloys
TL;DR: In this article, the grain boundary segregation of magnesium is examined with reference to both direct and indirect experimental evidence for magnesium segregation, and evidence to support both equilibrium and non-equilibrium segregation is presented.
Journal ArticleDOI
Determination of the eutectic structure in the Ag-Cu-Sn system
TL;DR: In this paper, tin-rich alloys were fabricated to better determine the much-debated morphology of secondary and tertiary phases in the eutectic structure of lead-free solder alloys.
Journal ArticleDOI
Grain-boundary segregation in an Al-8 wt % Mg alloy
T. Malis,M. C. Chaturvedi +1 more
TL;DR: The grain-boundary segregation of Mg atoms in a high-purity Al-8wt% Mg alloy, water quenched from the solution heat-treatment temperature, has been investigated by energy dispersive X-ray microanalysis in a TEM/STEM electron microscope.
References
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Journal ArticleDOI
Solute induced hardening near grain boundaries in zone refined metals
TL;DR: In this article, a solute-clustering model is proposed for grain boundary quench-hardening based on preferential solutevacancy interactions and non-ideal thermodynamic behavior of the binary system.
Journal ArticleDOI
Studies of segregation and the initial stages of precipitation at grain boundaries in an aluminium 7 wt. % magnesium alloy with an energy analysing electron microscope
TL;DR: In this article, a high resolution technique was developed for the study of segregation and associated phenomena; a microanalysis is, in effect, performed on a highly magnified image of a specimen when examined by transmission electron microscopy.