Effect of channel angle on the material flow and hardness distribution during incremental ECAP of Al-1050 billets

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Salamati, Mohammad and Qarni, Muhammad Jawad and Tamimi, Saeed and Rosochowski, Andrzej (2016) Effect of channel angle on the material flow and hardness distribution during incremental ECAP of Al-1050 billets. In: The 19th International ESAFORM Conference on Material Forming, 2016-04-27 - 2016-04-29, Nantes Congress Center.

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Abstract

Incremental equal channel angular pressing (I-ECAP) is an extension of the classical ECAP method used to produce ultrafine grained (UFG) metals. This paper investigates the first pass of I-ECAP performed on AA-1050 billets measuring 10x10x60mm and the effects of processing with two different dies with the channel intersection angle ϕ=90° and ϕ=120°. The forces required to produce billets were examined and compared. Micro hardness measurements were performed to create a hardness distribution contour map and to evaluate the strain distribution. Moreover FE simulations were performed to investigate the plastic strain distribution within the billets. It was found that using the ϕ=90° die results in higher deformation forces and also greater uniformity of strain distribution when compared to billets processed with ϕ=120° die. The experimental results correlated well with the findings of the simulations.

ORCID iDs

Salamati, Mohammad ORCID logoORCID: https://orcid.org/0000-0001-8259-1702, Qarni, Muhammad Jawad ORCID logoORCID: https://orcid.org/0000-0001-7162-5524, Tamimi, Saeed ORCID logoORCID: https://orcid.org/0000-0002-5450-0073 and Rosochowski, Andrzej ORCID logoORCID: https://orcid.org/0000-0001-7896-8167;
CORE (COnnecting REpositories)