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Abstract：
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The ingots of 7075/6009 aluminum composites were prepared by adjusting the temperature of ladle inside melt from 680℃,730℃ to 780℃ in double-stream-pouring continuous casting.The ingots were then deformed by free hot compression and hot rolling.The effects of pouring temperatures of the melts inside ladles on macro- and micro-structure and tensile property of the 7075/6009 aluminum composite plates were studied.The results show that the tensile strength and yield strength of the rolled and heat-treated sheets increase,however,the elongation of the sheets has little change when the temperatures of the melt in inside ladle increase from 680℃ to 780℃.This occurrence is attributed to the decrease of the thickness of the external layer and the increase of the volume fraction of the internal 7075 alloy with the increase of the melt temperature inside ladle.The optimal tensile property of 7075/6009 aluminum composite plates under T6 condition is that the ultimate strength,yield stress and elongation are 404MPa,364MPa and 15.3% respectively.
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Funds：
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国家自然科学基金资助项目(50575076,50710105075)
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AuthorIntro：
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Reference：
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