热轧双相钢-铝合金黏接-自冲铆接头不同腐蚀环境下的耐久性研究  

Study on durability of bonding-self-piercing riveting joints in hot rolled dual phase steel-aluminum alloy under different corrosion environments

作　　者：赵腾飞 邢保英[1] 何晓聪[1] 曾凯[1] 冯震 ZHAO Tengfei;XING Baoying;HE Xiaocong;ZENG Kai;FENG Zhen(Faculty of Mechanical and Electrical Engineering,Kunming University of Science and Technology,Kunming 650500,Yunnan,China)

机构地区：[1]昆明理工大学机电工程学院,云南昆明650500

出　　处：《实验力学》2022年第6期875-880,共6页Journal of Experimental Mechanics

基　　金：国家自然科学基金资助项目(52065034);云南省应用基础研究计划青年项目(14051848)。

摘　　要：为探究热轧双相钢-铝合金黏接-自冲铆接头(黏-铆复合接头)在不同腐蚀环境下的耐久性,以0.6mol/L的NaCl溶液和0.02mol/L的NaHSO_(3)溶液作为腐蚀液,对热轧双相钢(DP590)-铝合金5052黏-铆复合接头进行干湿周浸交替腐蚀实验,通过腐蚀动力学和静力学测试,研究接头在不同腐蚀环境下的静力学性能和失效机理。发现盐性环境下试件损失量呈递增趋势,酸性环境下试件损失量先增大后减小。酸性环境下随腐蚀的进行,接头承受载荷的最大值逐渐减小,对接头的不利影响更为突出;盐性环境下接头承受载荷的最大值先增大后减小,但对胶层的破坏程度更严重。两种腐蚀环境对接头的失效形式无显著影响,均为铆钉从下板拉脱;盐性环境中接头搭接区域腐蚀更为严重,上板表面氧、氯元素含量明显增加。In order to explore the durability of hot rolled dual phase steel-aluminum alloy bonding-self-piercing riveting joints(adhesive-riveted composite joint)in different corrosion environments,the adhesive-riveted composite joint in hot-rolled dual phase steel(DP590)and aluminum alloy 5052 was tested by cyclic wet dry immersion corrosion test with 0.6 mol/L NaCl solution and 0.02 mol/L NaHSO_(3)solution as corrosion solution.The static mechanical properties and failure mechanism of the joint in different corrosive environments were studied.It is found that in the salt environment,the loss amount of specimen increases.But in the acid environment,the amount of specimen loss first increases and then decreases.In the acid environment,the maximum load of the joint decreases with the corrosion,and the adverse effect on the joint is more prominent.In the salt environment,the maximum load of the joint first increases and then decreases,but the damage to the adhesive layer is more serious.Moreover,the two corrosion environments have no significant effect on the failure mode of the joint,and the rivet is pulled off from the lower plate.In the salt environment,the corrosion in the lap joint area is more serious,and the contents of O and Cl on the surface of the upper plate increase significantly.

关 键 词：自冲铆接 腐蚀环境 静力学分析 元素分析 

分 类 号：TH131.1[机械工程—机械制造及自动化]