Ni中间层对6061T6铝合金板/08Al异种金属电阻点焊接头的力学性能及组织的影响
Effects of Ni Interlayers on Mechanical Properties and Microstructure of Resistance Spot Welding Joints of 6061T6 Aluminum Alloy Plates/08Al Dissimilar Metal
彭宇欣 1刘省 1胡心彬1
作者信息
- 1. 湖北工业大学材料与化学工程学院,武汉,430068;湖北工业大学绿色轻工材料湖北省重点实验室,武汉,430068;车用轻质材料与加工湖北省工程实验室,武汉,430068
- 折叠
摘要
通过在钢板上添加Ni中间层,成功实现了 6061T6铝合金板与08Al钢板的可靠连接,显著提高了铝/钢点焊接头的力学性能.研究结果显示,采用预制Ni中间层工艺可控制Ni中间层在钢板上的厚度与分布,减少Al-Fe脆性金属间化合物的形成;相较于直接添加Ni箔中间层,预制Ni中间层工艺能有效增大焊核直径;钢板上激光熔覆Ni层的铝/钢电阻点焊接头最大拉剪力较高,比无中间层的接头最大拉剪力增大了35.5％.
Abstract
By adding Ni interlayers to steel plates,the reliable connections between 6061T6 alumi-num alloy plates and 08Al steel plates were successfully realized,and the mechanical properties of alu-minum/steel spot welding joints were significantly improved.The results show that the thickness and distribution of Ni intermediate layers on steel plates may be controlled by using the prefabricated Ni intermediate layer processes,and the formation of Al-Fe brittle intermetallic compounds may be re-duced.Compared with adding Ni foil intermediate layers directly,the prefabricated Ni intermediate layer processes may effectively increase the nugget diameter.The maximum tensile sheer force of alu-minum/steel resistance spot welding joints with laser cladding Ni layer on steel plates is 35.5％higher than that without intermediate layers.
关键词
铝/钢电阻点焊/6061T6铝合金/中间层/第一性原理计算Key words
aluminum/steel resistance spot welding/6061T6 aluminum alloy/interlayer/first-principle calculation引用本文复制引用
基金项目
中央引导地方科技发展专项(2019ZYYD015)
湖北省教育厅科学技术研究计划中青年人才项目(Q20311412)
出版年
2024
国家科技期刊平台
NSTL
万方数据