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effect of equal channel angular pressing and annealing treatment on the evolution of microstructure in almg0.7si aluminum alloy
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نویسنده
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eivani a. r. ,seyedein s.h. ,aboutalebi m.
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منبع
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iranian journal of materials science and engineering - 2018 - دوره : 15 - شماره : 1 - صفحه:31 -39
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چکیده
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Samples of almgo. 7si aluminum alloy were deformed up to three passes using equal channel angular pressing (ecap). formation of a sub-micron structure after three passes ofecap was demonstrated. microstructural stability of the samples was investigated at temperatures 300-500 °c. at 300 °c, fine recrystallized structure was formed after 10 min which was remained stable when the annealing was proceeded up to 18 h. however, at 350 °c and higher, the microstructure was quite unstable. even by 10 s annealing, the samples exhibited recrystallized structure which turned to abnormal grain growth when temperature enhanced to 500 °c and time up to 300 sec.
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کلیدواژه
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equal channel angular pressing ,almgo. 7si ,microstructural stability
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آدرس
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iran university of science and technology, school of metallurgy and materials engineering, iran, iran university of science and technology, school of metallurgy and materials engineering, iran, iran university of science and technology, school of metallurgy and materials engineering, iran
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Authors
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