Effect of ECAP on Mechanical Properties of an AA2014 Alloy

Abstract:

An AA2014 alloy was subjected to equal channel angular pressing in quenched condition up to fixed true strains of 1, 2 at a temperature of 170oC followed by artificial aging at the similar temperature. ECAP provides accumulation of a high dislocation density after a true strain of 1 and the formation of subgrain structure and separate chains of nanoscale grains after a true strain of 2. Yield stress (460 MPa) of the AA2014 alloy after 1 and 2 passes was the same. In contrast, increasing strain from 1 to 2 leads to three-fold increase in ductility.

• Periodical: Materials Science Forum (Volumes 667-669)
• Pages: 931-936
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.667-669.931
• Online since: December 2010
• Authors: Rustam Kaibyshev, Anna Mogucheva
• Keywords: Aluminium Alloy, Ductility, Equal-Channel Angular Pressing (ECAP), Microstructure, Strength

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