无机材料学报2011，Vol.26Issue(9)：897-901,5.DOI:10.3724/SP.J.1077.2011.00897
2219铝合金搅拌摩擦焊接头微观组织对微弧氧化膜生长的影响
Influence of Microstructure of Friction Stir Welding Joint on Growth of Microarc Oxidation Coating on 2219 Aluminum Alloy
摘要
Abstract
A ceramic coating of 50 μm thick on the surface of friction stir welding (FSW) joint on 2219 aluminum alloy was fabricated by microarc oxidation (MAO) technique in the silicate electrolyte. The surface morphology, phase constituent and microhardness of the coatings on the parent phase and FSW joint of aluminum alloy were investigated, furthermore the interactions of alloy microstructure and MAO coating growth were analyzed. The results show that the effect of microstructure of aluminum alloy on growth of MAO coating is weak, and the properties of MAO coatings on the parent phase and FSW joint of aluminum alloy are almost same. The ceramic coatings at different zones of joint consist of a-Al2O3, γ-Al2O3and mullite (3Al2O3·2SiO2) phases. The microhardness of coatings on the parent phase and FSW joint of aluminum alloy is same, which average microhardness is about HV 1500. In addition, the microstructure of aluminum alloy near the coating/alloy interface is not influenced by high-temperature process of microarc discharge.关键词
搅拌摩擦焊/微弧氧化/显微组织/2219铝合金Key words
friction stir welding/ microarc oxidation/ microstructure/ 2219 aluminum alloy分类
化学化工引用本文复制引用
薛文斌,鲁亮,杜建成,华铭,赵衍华..2219铝合金搅拌摩擦焊接头微观组织对微弧氧化膜生长的影响[J].无机材料学报,2011,26(9):897-901,5.基金项目
国家自然科学基金(51071031) （51071031）
北京市自然科学基金(2102018) （2102018）
