The effects of casting temperature and cast-rolling speed on the microstructure and properties of the composite interface of 1070A/7075 aluminium alloy composite sheet were studied. The results showed that under the same process conditions, the diffusion distances of the Mg element and the Cu element were the greatest and smallest, while that of the Zn element was found between the diffusion distances of the two elements. Furthermore, the intermetallic compound Al23CuFe4 generated at the interface greatly affected the bonding and tensile properties of the composite sheet. When the casting temperature was 690 °C, the cast-rolling speed was 12 m/min. The shear strength, tensile strength, yield strength and elongation were determined as 86.2, 173.9 and 108.6 MPa and 24.9%, respectively.
在"双碳"的时代背景下,材料的轻量化和安全性受到越来越广泛的关注.铝合金具有密度小、比强度高和耐蚀性好等优点,广泛应用于交通运输和航空航天等领域.结构材料的损坏形式绝大多数是疲劳损坏,占整体的70％左右,因此铝合金的疲劳性能关乎着产品使用安全性.为此,本文介绍了疲劳性能的特点及分类,综述了铝合金疲劳性能的研究现状、影响因素及近年来研究的热门领域.
据土耳其2023年2月16日发表的总统令,埃蒂铝业公司(Eti Aluminum)将投资30亿里拉(1.6亿美元)建一个新的铝板带轧制厂,生产能力100 kt/a,还将获得政府的鼓励补贴,包括关税和增值税豁免、保险费支持和减税.在未来10 a内,政府也将满足新工厂约50％的能源消耗支出,前提是不超过2亿里拉.该公司的目标是在5 a内完成投资目标.埃蒂铝业公司目前销售铝锭、T形锭、圆锭、扁锭、热轧板带等,生产能力82 kt/a.
俄罗斯是全球第二大原铝生产国,俄罗斯联合铝业公司(URC)是其唯一的生产者,总生产能力4 000 kt/a,约占全球总产能的6％.俄铝的生产链包括铝土矿及霞石矿山、氧化铝精炼、铝冶炼及铸造、铝箔及包装材料,其核心铝厂都位于水电资源丰富的西伯利亚地亚地区,极具成本竞争力.2021年俄铝原铝产量3 764 kt,氧化铝产量3 764 kt.
The slag inclusion in the casting process of aluminum alloy ingot may lead to different kinds of defects on the plates and strips for different applications.The finished de-fects of aluminum plate and strip used for can body and CTP stock with large market con-sumption and high quality requirements were studied by means of SEM.And the correspond-ing relationship between the finished defects and the melting and casting slag was estab-lished.Then the root cause of slag inclusion was explored with the help of Prefil-Footprint slag measuring instrument.The measures such as strengthening furnace cleaning,optimizing filtration,and optimizing the addition of grain refiners were formulated according to local conditions.This can effectively reduce the possibility of slag inclusion defects in melting and casting and avoid their impact on the quality of finished plate and strip products.
