Finite element simulation of residual stresses in cryogenic machining of AZ31B Mg Alloy

Z. Pu, D. Umbrello, O. W. Dillon, I. S. Jawahir

Research output: Contribution to journalConference articlepeer-review

36 Scopus citations

Abstract

Magnesium alloys are lightweight materials primarily used in transportation industry, and are also emerging as a potential material for biodegradable fixation implants. However, unsatisfactory corrosion resistance largely limits the application of these materials. Residual stresses were reported to have significant influence on corrosion resistance of Mg alloys. In this study, a finite element model was developed to simulate the residual stresses in cryogenic machining of AZ31B Mg alloy. After calibration using experimental data, numerical simulations were conducted to study the influence of cutting edge radius and cooling method (dry vs. cryogenic) on residual stresses. The model can be used to establish proper cutting conditions to induce compressive residual stresses to enhance the corrosion resistance of Mg alloys.

Original languageEnglish
Pages (from-to)282-287
Number of pages6
JournalProcedia CIRP
Volume13
DOIs
StatePublished - 2014
Event2nd CIRP Conference on Surface Integrity, CSI 2014 - Nottingham, United Kingdom
Duration: May 28 2014May 30 2014

Bibliographical note

Funding Information:
The authors would like to thank Air Products and Chemicals for providing the ICEFLY® liquid nitrogen delivery system to the Institute of Sustainable Manufacturing (ISM) at the University of Kentucky which enabled the experimental work. The help from Tao Lu (PhD candidate in Mechanical Engineering, University of Kentucky) on machining experiments and partial financial support from ISM are also sincerely acknowledged.

Keywords

  • Biodegradable implants
  • Cryogenic machining
  • Finite element modeling
  • Residual stresses

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Industrial and Manufacturing Engineering

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