SPFC440钢/5052铝自冲铆接头与胶铆复合接头腐蚀性能对比

doi:10.3969/j.issn.1004-132X.2022.11.011

中国机械工程 ›› 2022, Vol. 33 ›› Issue (11): 1345-1352.DOI: 10.3969/j.issn.1004-132X.2022.11.011

SPFC440钢/5052铝自冲铆接头与胶铆复合接头腐蚀性能对比

黄志超1;胡兆骁1;刘帅红1;蔺永诚2;姜玉强1;周泽杰1

1.华东交通大学载运工具与装备教育部重点实验室，南昌，330013
2.中南大学机电工程学院，长沙，410012

出版日期:2022-06-10 发布日期:2022-07-01
作者简介:黄志超，男，1971年生，教授、博士研究生导师。研究方向为板料连接技术。E-mail：hzcosu@163.com。
基金资助:
国家自然科学基金（51875201）

Comparison of Corrosion Properties of SPFC440 Steel /5052 Aluminum Self-piercing Riveting Joints and Adhesive Bond-riveted Hybrid Joints

HUANG Zhichao1;HU Zhaoxiao1;LIU Shuaihong1;LIN Yongcheng2;JIANG Yuqiang1;ZHOU Zejie1

1.Key Laboratory for Conveyance and Equipment of the Ministry of Education,East China Jiao Tong University,Nanchang,330013
2.College of Mechanical and Electrical Engineering,Central South University,Changsha,410012

Online:2022-06-10 Published:2022-07-01

摘要/Abstract

摘要： 为研究SPFC440钢与5052铝合金自冲铆接头的腐蚀性能，分别制备了自冲铆接和胶铆复合两种接头。通过对不同腐蚀时长下的两种接头试样进行疲劳性能测试，分析了粘胶剂对铆接接头腐蚀疲劳性能的影响，并对疲劳断口、裂纹扩展进行SEM和EDS检测。结果表明：粘胶剂的存在不仅提高了接头强度，还保护了金属界面，减小了电偶腐蚀的影响；随着腐蚀时间的增长，复合接头的最大静载荷值不断减小，自冲铆接接头最大静载荷先增大后减小；复合接头的拉伸失效模式与自冲铆接接头的失效形式相似；自冲铆接接头的疲劳裂纹主要集中在下板料的铆钉周围，复合接头主要为下基板的断裂；铆钉与下板相互接触区域以及两板间接触面出现了严重微动磨损。

关键词: SPFC440钢, 5052铝合金, 自冲铆接, 胶铆复合接头, 盐雾腐蚀

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 show 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.

Key words: SPFC440 steel, 5052 aluminum alloy, self-piercing riveting, adhesive bond-riveted hybrid joint, salt spray corrosion

中图分类号:

TG498

黄志超, 胡兆骁, 刘帅红, 蔺永诚, 姜玉强, 周泽杰. SPFC440钢/5052铝自冲铆接头与胶铆复合接头腐蚀性能对比[J]. 中国机械工程, 2022, 33(11): 1345-1352.

HUANG Zhichao, HU Zhaoxiao, LIU Shuaihong, LIN Yongcheng, JIANG Yuqiang, ZHOU Zejie. Comparison of Corrosion Properties of SPFC440 Steel /5052 Aluminum Self-piercing Riveting Joints and Adhesive Bond-riveted Hybrid Joints[J]. China Mechanical Engineering, 2022, 33(11): 1345-1352.

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SPFC440钢/5052铝自冲铆接头与胶铆复合接头腐蚀性能对比

Comparison of Corrosion Properties of SPFC440 Steel /5052 Aluminum Self-piercing Riveting Joints and Adhesive Bond-riveted Hybrid Joints

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