本研究使用的材?為AA5083-O鋁合金板材，研究主要分為?部份，第一部份為對AA5083-O鋁合金板材進行軋延。第二部份將軋延後的材料進行退火，以獲得細晶材料，並藉由各種機械性質的測試，來?解材?施予軋延的情況下，對材?整體性質造成的影響及內部微結構的變化。針對鈑材經軋延後的機械性質，分別做?硬?試驗、常溫?伸試驗、高溫?伸試驗等測試。 研究結果顯示：5083 鋁合金在經過90%軋延後，加熱至400℃持溫30min條件之退火處理後，能產生小於10μm 之細晶結構，在高溫拉伸部分，於500℃及應變?為1×10-3S-1條件下，材料的伸長?可達到413.33%，呈現優良之超塑性特性。 The research adopts the material of AA5083-O sheet alloy to be the subjective and do several experiments for two materials—the rolling sheet alloy and the rolling sheet ally after annealing. With different mechanic tests for these two materials, we find some differences of AA5083-O sheet alloy before and after rolling and its related change of inner microstructure. For the rolling sheet alloy after annealing, we also do experiments of hardness, room-temperature tensile strength and high-temperature tensile strength. The research shows that the 5083 alloy can produce grain refining structure which is smaller than 10μm when it is processed by 90% rolling, 400℃ heating for 30 minutes and annealing. For high-temperature tensile strength experiment, the elenglation can achieve 413.33% which represents good quality of superplasticity
