Surface Roughness Investigation of Ultrafine-Grained Aluminum Alloy Subjected to High-Speed Erosion

Research output: Contribution to journalArticlepeer-review

Abstract

This study is the first attempt to investigate the influence of severe plastic deformation (SPD) treatment on material surface behavior under intensive erosive conditions. Samples of aluminum alloy 1235 (99.3 Al) before and after high-pressure torsion (HPT) were subjected to intensive erosion by corundum particles accelerated via air flow in a small-scale wind tunnel. Velocity of particles varied from 40 to 200 m/s, while particle average diameter was around 100 mu m. Surface roughness measurements provided possibility to compare surface properties of both materials after erosion tests. Moreover, SPD processing appeared to increase noticeably the threshold velocity of the surface damaging process. Additionally, structural analysis of the fracture surfaces of the tested samples was carried out.

Original languageEnglish
Pages (from-to)3573-3579
Number of pages7
JournalJournal of Materials Engineering and Performance
Volume25
Issue number9
DOIs
StatePublished - Sep 2016

Scopus subject areas

  • Mechanical Engineering
  • Materials Science(all)

Keywords

  • erosion
  • fracture analysis
  • HPT
  • surface roughness
  • ultrafine-grained materials
  • HIGH-PRESSURE TORSION
  • MECHANICAL-PROPERTIES
  • COPPER
  • DEFORMATION
  • REFINEMENT
  • INITIATION
  • TI-6AL-4V

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