Toughness behaviour of Cryo-Ecap Aluminum 6063 by Charpy Impact Test

Srinivasulu Arnuri *, Swami Naidu Gurugubelli **
*-** Department of Metallurgy, JNTUK University College of Engineering, Vizianagaram, Andhra Pradesh, India.
Periodicity:January - March'2021


The severe plastic deformation technique that has attracted the material community in present days is Equal Channel Angular Pressing (ECAP). Ultra fine-grained microstructures can be produced by this technique without a significant change in geometry. The present work describes the study of cryo treatment effect post ECAP aging on impact strength of aluminium 6063 alloy using Charpy impact test. A channel having an angle of 108o is used for conducting ECAP process. Samples having dimensions of 100 mm X 9.5 mm X 9.5 mm were chosen and these samples solution were treated at 520 oC for 120 minutes. These samples were processed into two methods by dividing these solution treated samples into two groups. One set of samples has been dipped in liquid nitrogen for 20 minutes before the ECAP process has been carried out, obtaining Cryo-ECAP samples. The second set of solution-treated samples has been directly subjected to ECAP process, producing RT ECAP samples. The obtained samples dimensions were made suitable for Micro Vickers and Charpy Impact test and were given aging treatment at 180 oC for different timings. These two sets of samples are subjected to Micro Vickers hardness tests and Impact tests. The obtained results are correlated with macro and micro examinations.


Charpy Impact Test, Aluminum 6063, Cryo-ECAP, Vickers Hardness, Impact Test.

How to Cite this Article?

Arnuri, S., and Gurugubelli, S. N. (2021). Toughness behaviour of Cryo-Ecap Aluminum 6063 by Charpy Impact Test. i-manager's Journal on Material Science, 8(4), 1-10.


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