Adaptability of Stainless Steel Blind Rivets for Composite-Metal Fastening in Hot and Humid Marine Environment
To study the adaptability of two types of assemblies consisting of A286 stainless steel core-pull rivets connecting carbon fibre composites with 7075 aluminium alloys and carbon fibre composites with TC4 titanium alloy sandwich panels in hot and humid marine environments.The two types of sandwich panels connected by stainless steel core-pulling rivets were subjected to accelerated salt spray corrosion tests,and the corrosion was evaluated by image processing after corrosion.After the composite material with stainless steel rivets and aluminium alloy components underwent salt spray accelerated corrosion test,the aluminium alloy underwent severe corrosion.And the composite material and titanium alloy components after the corrosion test,the composite material plate surface appeared a large number of brown corrosion products,titanium alloy no obvious corrosion.Composite materials and aluminium alloy connectors in the salt spray environment will lead to aluminium alloy plate suffered galvanic coupling corrosion,while the stainless steel drawbolt is not subjected to corrosion,while the composite material plate and titanium alloy plate connectors in the salt spray environment will lead to stainless steel drawbolt suffered galvanic coupling corrosion,while the titanium alloy plate is not subjected to corrosion.