| Summary: | 碩士 === 國立雲林科技大學 === 機械工程系 === 103 === In this study, 8090 aluminum alloy set as research material to explore the impact on the formability of superplastic forming of the respond to the grain size, elongation and oxidation at different temperatures under atmospheric conditions. The material was heating constantly at different time and temperature. After heating, the thickness of high temperature oxidation production was observed through a scanning electron microscope. In addition, the elongation was measured to verify the deformation of superplastic forming sheet metal forming with high temperature tensile test. The results show that the microstructure of the 8090 aluminum alloy is heated at higher temperatures, the rate of oxidation is higher, the formability of the superplastic forming is also better at the higher temperatures.
Keywords: superplastic forming, grain size, elongation, high temperature oxidation
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