Evaluation of Fracture Toughness of Thermal Sprayed and Hard Chrome Coated Aluminium-Zinc Alloy

• Authors: E. Altuncu , S. İriç
• Languages of publication: EN

Abstracts

EN

The determination of fracture toughness of aluminium alloy aviation parts, exposed to cyclic mechanical loading, is an important engineering issue. The service life and crack resistance of such unprotected metallic parts is limited under corrosive operating conditions. The resistance against fracture cracking and corrosion resistance can be increased by the surface coatings. The scientific research of fracture toughness of coated metallic parts is being carried out in a comprehensive way. In this research, fracture toughness behaviour of high velocity oxy-fuel (HVOF) spray coated and conventional hard chrome plated aluminium-zinc alloy parts were compared and the results are discussed. The fracture surfaces are investigated and fracture toughness values are calculated. Electron microscopy analysis revealed significant differences in crack growth morphology and toughness values. As a result, the fracture toughness value is higher in hard chrome plated parts.

Keywords

EN

46.50.+a; 81.40.Np; 61.82.Bg

Discipline

• 46.50.+a: Fracture mechanics, fatigue and cracks(see also 62.20.M- Structural failure of materials in mechanical properties of condensed matter)
• 81.40.Np: Fatigue, corrosion fatigue, embrittlement, cracking, fracture, and failure(see also 62.20.M- Structural failure of materials)
• 61.82.Bg: Metals and alloys

• Journal: Acta Physica Polonica A
• Year: 2017
• Volume: 132
• Issue: 3
• Pages: 926-929

Dates

published

2017-09

Contributors

author

E. Altuncu

• Sakarya University, Technology Faculty, Metallurgy and Materials Engineering Department, Sakarya, Turkey

author

S. İriç

• Sakarya University, Engineering Faculty, Mechanical Engineering Department, Sakarya, Turkey

References

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Identifiers

DOI

10.12693/APhysPolA.132.926