Improvement of the wear resistance of nickel-aluminium bronze and 2014-T6 aluminium alloy by application of alternating magnetic field treatment

Sufyan Akram, Anatolii Babutskyi, Andreas Chrysanthou, Diogo Montalvão, Mark Whiting, Nada Pizurova

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Abstract

The present work has used an alternating magnetic field treatment at ambient temperature to improve the wear resistance of nickel-aluminium bronze and aluminium alloy 2014-T6. Pin-on-disc wear tests under lubricating conditions using a AISI52100 steel ball bearing as the counter face material have shown reduction in the width and depth of wear scars as well as lower values of the coefficient of friction following the treatment. The improved wear properties have been attributed to increased precipitation of κ IV in the case of the nickel-aluminium bronze and of GP zones as well as θ’’ for AA2014-T6. Transmission electron microscopy also revealed changes in the dislocation distribution, while X-ray diffraction showed changes in the residual stress for both alloys. The mechanism leading to these changes is discussed by consideration of the soft ferromagnetic properties of the nickel-aluminium bronze and the paramagnetic nature of AA2014.

Original languageEnglish
Article number203940
Number of pages21
JournalWear
Volume480-481
Issue number481
Early online date19 May 2021
DOIs
Publication statusPublished - 15 Sept 2021

Keywords

  • Magnetic field treatment, nickel-aluminium bronze, aluminium, precipitation hardening
  • Nickel-aluminium bronze
  • Magnetic field treatment
  • Aluminium
  • Precipitation hardening

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