Strength properties of aluminum/aluminium and aluminium/steel joints for light weighting of automotive body

摘要

The strength properties of four kinds of joining methods of aluminium to aluminium or aluminium to steel were investigated: selfpiercing riveting (Henrob rivetting), mechanical clinching (Tox clinching), hydrid of Henrob riveting and adhesive bonding (Tox clinching)m hydrid of Henrob riveting and adhesive bonding (Henrob-bonding) and hybrid of Tox clinching and adhesive bonding (Tox bonding). The strength properties of aluminium/aluminium joints and aluminium/steel joints were compared with those of 0.8 mm steel/steel spot welded and weld-bonded joints. It was shown that the strength properties of aluminium/steel joints are about equal to those of aluminium/aluminium joints. The strength properties of 1.6 mm aluminium /aluminium joints by Henrob rivetting and 1.3mm aluminium/aluminium joints by Henrob-bonding are equivalent to those of 0.8 mm steel/steel joints by spot welding and those of 1.5 mm aluminium/aluminium joints by Henrob-bonding are equivalent to those of 0.8 mm steel joints by weld bonding. In the case of Tox clinching and, Tox bonding, the strength properties of less than 1.6 mm aluminium/aluminium joints are less strong than those of 0.8 mm steel/steel joints by spot welding.