Residual stress profiles in high speed machining and microforming of biodegradable orthopedic implants

M. Salahshoor, Y. B. Guo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Biodegradable magnesium-calcium alloy is an attractive orthopedic biomaterial compared to permanent metallic alloys. However, the critical issue is that magnesium-calcium alloy corrodes too fast in the human organism. Hook-shaped compressive residual stress profiles, induced by various surface modification techniques in near surface zone, are proven to slower the degradation rate. This guarantees the presence of the implant in-vivo till the metabolic reactions leading to healing are over. The knowledge on how process parameters affect residual stress profiles is fundamental in successfully engineering the implants surface. Majority of surface modification techniques fall into two broad categories of cutting and forming operations. This study investigates the effects of process parameters in high speed face milling, representing a cutting operation, and low plasticity burnishing, as a micro forming process, on residual stress and microhardness profiles.

Original languageEnglish (US)
Title of host publicationASME/STLE 2011 International Joint Tribology Conference, IJTC 2011
Pages31-33
Number of pages3
DOIs
StatePublished - Dec 1 2011
Externally publishedYes
EventASME/STLE 2011 International Joint Tribology Conference, IJTC 2011 - Los Angeles, CA, United States
Duration: Oct 24 2011Oct 26 2011

Publication series

NameAmerican Society of Mechanical Engineers, Tribology Division, TRIB

Conference

ConferenceASME/STLE 2011 International Joint Tribology Conference, IJTC 2011
CountryUnited States
CityLos Angeles, CA
Period10/24/1110/26/11

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Materials Science(all)

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  • Cite this

    Salahshoor, M., & Guo, Y. B. (2011). Residual stress profiles in high speed machining and microforming of biodegradable orthopedic implants. In ASME/STLE 2011 International Joint Tribology Conference, IJTC 2011 (pp. 31-33). (American Society of Mechanical Engineers, Tribology Division, TRIB). https://doi.org/10.1115/IJTC2011-61042