有色金属材料与工程2024，Vol.45Issue(2)：62-69,8.DOI:10.13258/j.cnki.nmme.20230316003
钎焊后自然时效对3003/6xxx/3003复合铝合金性能和组织的影响
Effects of the natural aging time after brazing on properties and microstructures of 3003/6xxx/3003 cladding aluminum alloy
摘要
Abstract
Taking 6 xxx series aluminum alloy as core material and 3003 aluminum alloy as coating material on both sides,three layer cladding aluminum alloy with thickness of 1.5 mm was prepared by melting,casting,cladding,hot rolling,cold rolling and annealing.Natural aging was carried out for 1,5,10,15,20,25,30 d with air cooling by computational simulations of the brazing process at 600℃,respectively.The results show that the strength and hardness of the cladding aluminum alloy increase rapidly at the initial stage of natural aging,then slowly increase after 20 d.At 30 d,the tensile strength,yield strength and core Vickers hardness reach the maximum of 242.3 MPa,122.9 MPa and 84.0,respectively.The average grain size of the core material after brazing increase slightly,and remains with different natural aging time after brazing,indicating that the natural aging does not change the grain size of the core material.The secondary phase identified in the core material after brazing and natural aging is irregular AlFeSiMnCu phase.关键词
钎焊/自然时效/6xxx系/复合铝合金Key words
brazing/natural aging/6xxx series/cladding aluminum alloy分类
金属材料引用本文复制引用
曹琦,赵娜,严安,周德敬..钎焊后自然时效对3003/6xxx/3003复合铝合金性能和组织的影响[J].有色金属材料与工程,2024,45(2):62-69,8.基金项目
江苏省金属层状复合材料重点实验室资助项目(BM2014006) （BM2014006）
