Mechanical Properties of B1500HS/AA5052 Joints by Self-Piercing Riveting

Self-piercing riveting (SPR) is a suitable technology to join various materials and has attracted more attention in the automotive industry. In this work, effects of forming parameters on qualities mechanical properties B1500HS steel/AA5052 aluminum alloy SPR joints were analyzed. The results show that sheet stack sequence little influence peak tensile load rigidity joints. When steel placed sheet, failure displacement, energy absorption, ductility factor are, respectively, 2.77, 2.13, 2.28 times larger than those with sheet. sheets have better stability. Meanwhile, when fatigue life joint can be increased by about 98.4%, 88.3%, 118.1%, under high, medium, low loads. A opposite direction optimal performance 1.64 2.14 other two-rivet Generally, fractures occurred tests. fracture stacked an extends uni-directionally edge from point, while symmetric crack occurs for sequence. distribution cracks related load, mainly originate fretting wear area contact interface between rivet leg, upper lower