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Determination of residual stress within complex-shaped coarse-grained cobalt-chrome biomedical castings

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journal contribution
posted on 2016-09-05, 11:50 authored by Brian P. Conroy, David A. Tanner
ASTM F75 femoral knee implant casting components distort during manufacture due to residual stress re-distribution or inducement. These castings pose a number of challenges for residual stress determination methods; they have a complex geometry, their micro-structure is inhomogeneous, they work-harden rapidly and they have a coarse, elastically-anisotropic grain structure. The contour method is anticipated to be the most promising residual stress determination technique. X-ray diffraction is feasible for components which have experienced plastic deformation on their surface which results in refined diffracting domains. Centre-hole drilling is feasible, but the influence of stress induced from drilling and the effect of coarse grain-structure is unknown. Neutron diffraction is challenging also due to a coarse grain structure and difficult nuclear material properties.

Funding

Using the Cloud to Streamline the Development of Mobile Phone Apps

Innovate UK

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Study on Aerodynamic Characteristics Control of Slender Body Using Active Flow Control Technique

Japan Society for the Promotion of Science

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BGP Doctoral 2010 Grant (University of Bristol)

Arts and Humanities Research Council

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History

Publication

Materials Science and Technology; 32 (14), pp. 1411-1426

Publisher

Taylor and Francis

Note

peer-reviewed

Other Funding information

IRC, DePuy (Ireland), ERC

Rights

This is an Author's Original Manuscript of an article whose final and definitive form, the Version of Record, has been published in Materials Science and Technology, 32 (14) pp. 1411-1426. 2016 copyright Taylor & Francis, available online at: http://dx.doi.org/10.1080/02670836.2016.1177304

Language

English

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