Correlation of surface integrity with processing parameters and advanced interface cooling/lubrication in burnishing of Ti-6Al-4V alloy

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19 Scopus citations

Abstract

Burnishing (also known as deep rolling) is a chipless finishing process used to improve the surface integrity of metals by severe plastic deformation (SPD) of surface asperities. As surface integrity has a large impact upon the functional performance of aerospace components and assemblies, burnishing is a means of significantly increasing the cyclical fatigue life of critical components, such as turbine and compressor airfoils. The objective of this study was to evaluate the process- induced surface integrity of Ti-6Al-4V alloy as a function of number of overlapping passes, loading force, as well as feed and speed, for four cooling/lubrication conditions: conventional flood cooling (emulsion), minimum quantity lubrication (MQL), cryogenic cooling (LN2) and hybrid cooling/lubrication (MQL+LN2). Analysis revealed that all examined burnishing parameters, with the exception of speed, play a fundamental role in controlling the processed surface integrity and thus also in the likely functional performance of Ti-6Al-4V aerospace components.

Original languageEnglish
Pages (from-to)53-66
Number of pages14
JournalAdvances in Materials and Processing Technologies
Volume5
Issue number1
DOIs
StatePublished - Jan 2 2019

Bibliographical note

Publisher Copyright:
© 2018, © 2018 Informa UK Limited, trading as Taylor & Francis Group.

Keywords

  • Aerospace
  • Burnishing
  • Cryogenic
  • Lubrication
  • Nanocrystalline
  • Severe Plastic Deformation
  • Surface integrity

ASJC Scopus subject areas

  • General Materials Science
  • Mechanics of Materials
  • Industrial and Manufacturing Engineering

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