1. Comparison of Corrosion Properties of SPFC440 Steel /5052 Aluminum Self-piercing Riveting Joints and Adhesive Bond-riveted Hybrid Joints.
- Author
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HUANG Zhichao, HU Zhaoxiao, LIU Shuaihong, LIN Yongcheng, JIANG Yuqiang, and ZHOU Zejie
- Subjects
RIVETED joints ,ALUMINUM alloys ,FRETTING corrosion ,CORROSION fatigue ,FATIGUE cracks ,ADHESIVE joints ,ELECTROLYTIC corrosion ,BOLTED joints - Abstract
The corrosion properties of SPFC440 steel and 5052 aluminum alloy self-piercing riveting joints were studied, and the self-piercing riveting joints and adhesive bond-riveted hybrid joints were fabricated respectively. The fatigue tests of joints with different corrosion durations were carried out, and the effects of adhesive on the corrosion and fatigue properties of riveting joints were analyzed. In addition, the fatigue fracture and crack extension were analyzed by SEM and EDS. The results how that the adhesive increases the strength of riveting joints and protects the metal interface and reduces the galvanic corrosion. The maximum static loads of adhesive bond-riveted hybrid joints are decreased continuously with the increase of corrosion durations. And the maximum static loads of self-piercing riveting joints are first increased and then decreased with the increase of corrosion durations. The tensile failure mode of adhesive bond-riveted hybrid joints is similar to that of self-piercing riveting joints. The fatigue cracks of self-piercing riveting joints are mainly concentrated in the regions of the locked sheet around the rivet. Failure mode of adhesive bond-riveted hybrid joints shows the fracture of the locked sheets. Serious fretting wear exists in the contact areas between the rivet and the locked sheet, and the contact surfaces between the pierced sheet and the locked sheet. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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