Improvement of mechanical properties of AA6063 aluminum alloy after equal channel angular pressing by applying a two-stage solution treatment

Improvement of mechanical properties of AA6063 aluminum alloy after equal channel angular pressing by applying a two-stage solution treatment

Ashrafizadeh, S.M. (Iran University of Science and Technology)
Eivani, A.R. (Iran University of Science and Technology)
Jafarian, H.R. (Iran University of Science and Technology)
Zhou, J. (TU Delft Biomaterials & Tissue Biomechanics)

2017

A two-stage solution treatment composed of an initial soaking at 420 °C for 10 min and the second soaking at 500 °C for 10 min was applied to cold-worked AA6063 aluminum alloy samples after equal channel angular pressing (ECAP) for two and four passes. The microstructures and mechanical properties of the samples were compared with those of the samples after a routine one-stage solution treatment at 500 °C for 10 min. Abnormal grain growth (AGG) occurred to the samples during the one-stage solution treatment. However, no AGG was observed in the samples after the two-stage solution treatment. As a result of the prevention of AGG from occurring, the hardness, yield strength and ultimate tensile strength of the alloy after the two-stage solution treatment were significantly increased, while elongation to failure remained almost unchanged.

Aluminum
Equal channel angular pressing
Grain growth
Heat treatment
Mechanical property

http://resolver.tudelft.nl/uuid:6087254d-1d16-4136-8cc9-f66b2367f368

https://doi.org/10.1016/j.msea.2017.01.024

2019-01-07

0921-5093

Materials Science and Engineering A: Structural Materials: Properties, Microstructures and Processing, 687, 54-62

Accepted Author Manuscript

Institutional Repository

journal article

© 2017 S.M. Ashrafizadeh, A.R. Eivani, H.R. Jafarian, J. Zhou