Combined corrosion and fatigue performance of joined materials for automotive applications

The aim of this study is to evaluate fatigue performance of joined assemblies (spot weld and/or adhesive bonding) in corrosive environment. Various assemblies have been tested in alternated and simultaneous fatigue‐corrosion modes. Adhesive joints are strongly affected by simultaneous fatigue‐corros...

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Bibliographic Details
Published in:Materials and corrosion 2016-11, Vol.67 (11), p.1143-1151
Main Authors: Vucko, F., LeBozec, N., Thierry, D., Weber, B., Dosdat, L., Luckeneder, G., Bschorr, T., Rother, K., Sciaboni, C., Sczepanski, J.
Format: Article
Language:English
Subjects:
Adhesive bonding
Adhesive joints
Amplitudes
Assemblies
Automotive applications
Corrosion
Corrosive environment
Fatigue (materials)
Fatigue corrosion
Fatigue life
Fatigue of materials
Fatigue performance
Local stress
low alloyed steel
Low alloyed steels
Low-amplitude
spot weld
Spot welding
Spot welds
Welds
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Summary:The aim of this study is to evaluate fatigue performance of joined assemblies (spot weld and/or adhesive bonding) in corrosive environment. Various assemblies have been tested in alternated and simultaneous fatigue‐corrosion modes. Adhesive joints are strongly affected by simultaneous fatigue‐corrosion with a large drop of the fatigue life compared to results in air. By alternating fatigue and corrosion, the reduction of fatigue life is important. For spot welding, fatigue life is decreased at higher load amplitudes and increased at lower amplitudes. These results are strongly linked to the opening of the gap near the spot weld at high load amplitudes. At low amplitudes, corrosion might limit the local stress at the notch root of the weld. The aim of this study is to evaluate fatigue performance of joined assemblies (spot weld and/or adhesive bonding) in corrosive environment. Various assemblies have been tested in alternated and simultaneous fatigue‐corrosion modes. Adhesive joints are strongly affected by simultaneous fatigue‐corrosion with a large drop of the fatigue life compared to results in air.
ISSN:0947-5117
1521-4176
1521-4176
DOI:10.1002/maco.201608962