Microstructural and Fractographic Aspects on the Failure Analysis of a Mixed Mode Fractured Ti-6Al-4V Femoral Long Plate

The increasing use of orthopedic surgical implants, both due to the increase in people's longevity and the greater exposure to different types of accidents, has led to the need to develop metallic materials with better performance in this type of application. The aim of this work is to analyze...

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Bibliographic Details
Published in:Journal of failure analysis and prevention 2023-02, Vol.23 (1), p.414-419
Main Authors: de Cerqueira Abud, Ibrahim, Barbosa, Cássio, de Jesus Monteiro, Maurício, dos Santos, Claudio Teodoro, Gallo, Gerson Ortiz, Caminha, Ieda Maria Vieira
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Chemistry and Materials Science
Classical Mechanics
Corrosion and Coatings
Crack propagation
Failure analysis
Fatigue failure
Machining
Materials Science
Metal plates
Optical microscopy
Orthopaedic implants
Orthopedics
Quality Control
Reliability
Safety and Risk
Solid Mechanics
Stress concentration
Surgical implants
Technical Article > -peer-reviewed
Thermomechanical treatment
Titanium base alloys
Transgranular fracture
Tribology
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Summary:The increasing use of orthopedic surgical implants, both due to the increase in people's longevity and the greater exposure to different types of accidents, has led to the need to develop metallic materials with better performance in this type of application. The aim of this work is to analyze how the failure of a Ti-6Al-4V alloy plate occurred after only 45 days of insertion of this implant in a patient about 50 years old. The use of experimental analysis techniques, such as optical microscopy and scanning electron microscopy (SEM), allowed the conclusion that the plate initially fractured due to fatigue, caused by the concentration of stresses resulting from inadequate machining in the roots of the threads of the holes in plate, proceeding as a brittle transgranular fracture through the cleavage mechanism, due to embrittlement caused by inadequate thermomechanical processing.
ISSN:1547-7029
1728-5674
1864-1245
DOI:10.1007/s11668-022-01586-4