Aluminum Copper Alloy
Laboratory report
Aluminum Copper Alloy
MSCI 300 – Thermodynamics of Materials
Alexandre de Freitas Silveira
Eau Claire
December 18th, 2012.
Abstract: At this experiment, the composition of an alloy of Aluminum Copper was analyzed via X-Ray Fluorescence. From this, it was possible to construct a phase diagram a make some predictions about the possible phases presents at considering the 3 samples used in this experiment, the samples prepared at this experiment the sample as delivered was analyzed without any kind of treatment (sample I), the sample with slow cool was prepared melting the bulk material at a heater an letting it cools at the heater at a slow rate (sample II), finally, the sample with quick cool was made melting the bulk material and then slow cooled as the sample II, after this the sample was melted again and quickly cooled using liquid nitrogen (sample III). Those samples were analyzed by Scanning Electronic Microscopy to characterize the composition, as well as see the pattern of phases in the alloy.
Keywords: Aluminum Copper, Phase Diagram, Cooling rate, SEM, XRF.
Introduction
The microstructure of the material plays a fundamental role at the mechanical properties. Thus, the comprehension of phase diagrams for system is very important. Besides, phase diagrams provide important information regarding the melting, casting, crystallization and other information [1].
1) Binary Systems with Partial Solid Solubility
This is the case of the alloy Aluminum and Copper, which solute atoms of another metal can be dissolved in the solvent in a solid state. In such diagrams, three single phase regions are found on the diagram: α, β, and liquid. The α phase, a solid solution rich in an atom, has also B atoms as the solute component. The β phase, a solid solution rich in B atoms, has A as the solute. Also, there are three two-phase regions found for the system: The α + L, β + L and α + β phases [1].
2) Principles of
Aluminum Copper Alloy
MSCI 300 – Thermodynamics of Materials
Alexandre de Freitas Silveira
Eau Claire
December 18th, 2012.
Abstract: At this experiment, the composition of an alloy of Aluminum Copper was analyzed via X-Ray Fluorescence. From this, it was possible to construct a phase diagram a make some predictions about the possible phases presents at considering the 3 samples used in this experiment, the samples prepared at this experiment the sample as delivered was analyzed without any kind of treatment (sample I), the sample with slow cool was prepared melting the bulk material at a heater an letting it cools at the heater at a slow rate (sample II), finally, the sample with quick cool was made melting the bulk material and then slow cooled as the sample II, after this the sample was melted again and quickly cooled using liquid nitrogen (sample III). Those samples were analyzed by Scanning Electronic Microscopy to characterize the composition, as well as see the pattern of phases in the alloy.
Keywords: Aluminum Copper, Phase Diagram, Cooling rate, SEM, XRF.
Introduction
The microstructure of the material plays a fundamental role at the mechanical properties. Thus, the comprehension of phase diagrams for system is very important. Besides, phase diagrams provide important information regarding the melting, casting, crystallization and other information [1].
1) Binary Systems with Partial Solid Solubility
This is the case of the alloy Aluminum and Copper, which solute atoms of another metal can be dissolved in the solvent in a solid state. In such diagrams, three single phase regions are found on the diagram: α, β, and liquid. The α phase, a solid solution rich in an atom, has also B atoms as the solute component. The β phase, a solid solution rich in B atoms, has A as the solute. Also, there are three two-phase regions found for the system: The α + L, β + L and α + β phases [1].
2) Principles of
References: [1] – Callister, W. D. Jr. – Materials Science and Engineering: An Introduction. 8th Edition (2010). [2] – <http://www.asminternational.org/> accessed at 12/16/2012. [3] – <http://www.learnxrf.com> accessed at 12/16/2012.