Grain refinement and microstructure evolution in aluminum A2618 alloy by high-pressure torsion

Intan Fadhlina Mohamed, Seungwon Lee, Kaveh Edalati, Zenji Horita, Shahrum Abdullah, Mohd Zaidi Omar, Wan Fathul Hakim Wan Zamri

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3 Citations (Scopus)

Abstract

This work presents a study related to the grain refinement of an aluminum A2618 alloy achieved by High-Pressure Torsion (HPT) known as a process of Severe Plastic Deformation (SPD). The HPT is conducted on disks of the alloy under an applied pressure of 6 GPa for 1 and 5 turns with a rotation speed of 1 rpm at room temperature. The HPT processing leads to microstructural refinement with an average grain size of ~250 nm at a saturation level after 5 turns. Gradual increases in hardness are observed from the beginning of straining up to a saturation level. This study thus suggests that hardening due to grain refinement is attained by the HPT processing of the A2618 alloy at room temperature.

Original languageEnglish
Pages (from-to)149-152
Number of pages4
JournalJurnal Teknologi
Volume78
Issue number6-9
DOIs
Publication statusPublished - 2016

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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    Mohamed, I. F., Lee, S., Edalati, K., Horita, Z., Abdullah, S., Omar, M. Z., & Wan Zamri, W. F. H. (2016). Grain refinement and microstructure evolution in aluminum A2618 alloy by high-pressure torsion. Jurnal Teknologi, 78(6-9), 149-152. https://doi.org/10.11113/jt.v78.9163