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Al alloys were investigated. The tensile property tests indicate that the ageing response of the 2024 aluminum alloy is accelerated when treated by cold deformation after solution treatment, and the tensile strength is increased to about 140 MPa while the elongation still keeps above 8%. However, compared with the 2024 alloys, although the aging response of the cold deformed 7A04 aluminum alloy......
Compressive formability of 7075 aluminum alloy rings under hydrostatic pressure LIU Gang(刘 钢), WANG Li-liang(王礼良), YUAN Shi-jian(苑世剑), WANG Zhong-ren(王仲仁) School of Materials Science... of the ring, numerical simulation and experimental research were carried out. The effect of hydrostatic pressure on the deformation of aluminum alloy 7075 ring was obtained by numerical simulation......
Joint performance of laser-TIG double-side welded 5A06 aluminum alloy CHEN Yan-bin(陈彦宾), MIAO Yu-gang(苗玉刚), LI Li-qun(李俐群), WU Lin(吴 林) State Key Laboratory of Advanced Welding Production... of the welds of laser-TIG double-side welded 5A06 aluminum alloy was investigated. The results show that the weld cross-sectional shape has an intimate relation with the mechanical properties......
Portevin-Le Chatelier effect in Al-Zn-Mg-Cu-Zr aluminum alloy CHEN Jun-zhou(陈军洲)1, 2, ZHEN Liang(甄良)1, FAN Li-wei(樊立伟)3, YANG Shou-jie(杨守杰)2, DAI Sheng-long(戴圣龙)2, SHAO Wen-zhu(邵文柱)1...; Abstract: Portevin-Le Chatelier (PLC) effect in a severely cold-rolled Al-Zn-Mg-Cu-Zr aluminum alloy (AA7055 type) plate before and after......
超音频脉冲方波电流参数对2219铝合金焊缝组织和力学性能的影响 从保强1,周兴国1,罗军1,齐铂金1 (1.北京航空航天大学机械工程及自动化学院,北京,100191) 摘要:采用新型超快速变换HPVP-TIG电弧焊接工艺进行2219-T87高强铝合金焊接,研究脉冲电流特征参数对焊接接头组织和力学性能的影响.结果表明,加入超音频脉冲方波电流(UPSWC)作用后,铝合金焊缝区显微组织由粗大柱状晶转变为细小等轴晶,在焊缝区内除了等轴树枝晶外,还存在一种呈带状分布的极细小等轴非枝晶组织,同时焊缝熔合区宽度明显减小,焊接接头抗拉强度和断后伸长率显著提高.在一定范围内增加脉冲电流幅值,提高脉冲频率,减小占空比,可增强组织细化作用,提高接头力学性能.与未加入UPSWC作用相比,脉冲电流幅值100 A,脉冲频率40 kHz,占空比20%时,接头抗拉强度和断后伸长率分别提高约22%和111%. 关......
Dynamic softening behaviors of 7075 aluminum alloy QUAN Guo-zheng(权国政)1, LIU Ke-wei(刘克威)1, ZHOU Jie(周 杰)1, CHEN Bin(陈 斌)2 1. School of Material Science and Engineering, Chongqing University... hot deformation of 7075 aluminum alloy were studied by isothermal hot compression tested at temperatures of 250, 300, 350, 400 and 450 ℃ and strain rates of 0.01, 0.1, 1 and 10 s-1 on Gleeble1500......
Defect analysis of complex-shape aluminum alloy forging SHAN De-bin(单德彬), ZHANG Yan-qiu(张艳秋), WANG Yong(王 勇), XU Fu-chang(徐福昌), XU Wen-chen(徐文臣), L? Yan(吕 炎) School of Materials Science... aluminum alloy with complex shape. The complexity of forging is easy to lead to the occurrence of the defects, such as underfilling, folding, metal flow lines disturbance and fibre breaking. The reasons......
Investigation of Out-Phase Electromagnetic Casting of Aluminum Alloy () 摘要:The influences of out-phase electromagnetic field on the as-cast structure of horizontal direct chill casting aluminum... changes from columnar grains to equiaxed grains and grain size decreases. 关键词:out-phase electromagnetic field; aluminum alloy; horizontal direct chill casting; as-cast structure; [全文内容正在添加中] ......
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