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Microstructure and Properties of 7475 AluminumAlloy after Equal-Channel Angular Pressing

Zhao Xicheng

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Abstract

The equal-channel angular pressing (ECAP) had achieved the potential for obtaining ultra-fine grain and improving mechanical properties. In this paper, ECAP was successfully conducted on a 7475 aluminum alloy at temperatures 523 K and 573 K up to an equivalent true strain of 12 using routes Bc. The grain size was refined to within the range from 0.29 and 0.5 μm by ECAP at these different temperatures. The results from tensile testing indicate that ECAP leads to a significant improvement of ductility in the experimental alloy while the yield and tensile strength are also slightly improved.

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What this paper is about

The equal-channel angular pressing (ECAP) had achieved the potential for obtaining ultra-fine grain and improving mechanical properties. In this paper, ECAP was successfully conducted on a 7475 aluminum alloy at temperatures 523 K and 573 K up to an equivalent true strain of 12 using routes Bc. The grain size was refined to within the range from 0.29 and 0.5 μm by ECAP at these different temperatures. The results from tensile testing indicate that ECAP leads to a significant improvement of ductility in the experimental alloy while the yield and tensile strength are also slightly improved.

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Available abstract

The equal-channel angular pressing (ECAP) had achieved the potential for obtaining ultra-fine grain and improving mechanical properties. In this paper, ECAP was successfully conducted on a 7475 aluminum alloy at temperatures 523 K and 573 K up to an equivalent true strain of 12 using routes Bc. The grain size was refined to within the range from 0.29 and 0.5 μm by ECAP at these different temperatures. The results from tensile testing indicate that ECAP leads to a significant improvement of ductility in the experimental alloy while the yield and tensile strength are also slightly improved.

Key concepts: Materials science, Pressing, Microstructure, Ultimate tensile strength, Ductility (Earth science), Alloy, Metallurgy, Grain size

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Microstructure and Properties of 7475 AluminumAlloy after Equal-Channel Angular Pressing — Research Paper | ScholarLens