6. Solid state manufacturing
Few processes use this type of shaping, mainly because of the cost of the equipment involved and the small number of alloys that can be chosen as a matrix.
The most common example is superplastic alloys. The mixture of propanol and particles is placed between two sheets of superplastic metal, such as aluminum alloy 7475
The authors carried out tests with whiskers and silicon carbide particles. In both cases, the properties obtained were excellent, particularly ductility (elongation at break from 3.6 to 12.5%). However, the presence of propanol, which has to be evacuated by vacuum evaporation, and the excessively long...
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Solid state manufacturing
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Costs
Today, the cost of reinforcing particles is highly variable, with a downward trend in prices. For example, a pound (= 0.454 kg) of particles can vary from 2 to 40 Canadian dollars, depending on the nature and size of the particles, whereas a pound of processed aluminum (finished parts) used to cost only 1 to 2 dollars, depending on the alloy and, above all, the quantity. We need to keep a close eye on the price of aluminum, which...
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