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Effects of Spinning Process on Intergranular Corrosion Behavior of 5A06 Aluminum Alloy 被引量:1
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作者 张谦君 付永康 +4 位作者 ZHAO Wenlong 李青 ZHANG Rulin GUO Yong LI Rongbin 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS CSCD 2023年第1期231-236,共6页
Aluminum alloy tubes were prepared by tube spinning.The intergranular and electrochemical corrosion tests were used to investigate the intergranular corrosion behavior of the 5A06 aluminum alloy blank sample and the s... Aluminum alloy tubes were prepared by tube spinning.The intergranular and electrochemical corrosion tests were used to investigate the intergranular corrosion behavior of the 5A06 aluminum alloy blank sample and the spinning sample.Results showed that the intergranular corrosion resistance of the spinning sample was higher than that of the blank sample.In addition,the electrochemical corrosion resistance of the spinning sample was higher than that of the blank sample.The EDS maps indicated a uniform element distribution pattern of aluminum and magnesium.Moreover,the phase composition and lattice constant of the samples were obtained by XRD analysis.The differences in microstructure between the aluminum alloy subjected to the spinning process and the untreated aluminum alloy were determined by EBSD.The differences were mainly attributed to the complex interactions among grain size,dislocations and grain boundaries. 展开更多
关键词 spinning process 5a06 aluminum alloy intergranular corrosion EBSD
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Reverse deep drawability of 5A06 aluminum alloy plate at elevated temperatures 被引量:3
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作者 张志超 徐永超 苑世剑 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2016年第6期1538-1545,共8页
In order to avoid the occurrence of fracture at room temperature in reverse deep drawing of aluminum alloy plate, the warm reverse deep drawing method was proposed. The experiments were conducted at room temperature,... In order to avoid the occurrence of fracture at room temperature in reverse deep drawing of aluminum alloy plate, the warm reverse deep drawing method was proposed. The experiments were conducted at room temperature, 280 and 360 ℃ with a 4.5 mm thick 5A06 aluminum alloy plate. The effect of temperature, blank-holding force and gap on the fracture and wrinkle of the reverse deep drawing process was investigated. A fully coupled thermal-mechanical simulation was carried out to obtain the stress distribution through the commercial software of Abaqus/Explicit. The results show that the fracture is avoided at 280 ℃ since the bending-induced stress gradient in the transient area between the inside corner and the straight wall decreases from 505 MPa at RT to 72 MPa at 280 ° C. Although the fracture is avoided as the temperature increases, the wrinkle occurs at the outside die corner at temperature over 280 ° C, where the circumferential compressive stress becomes larger than that at the inside. As the temperature increases to 360 ℃, the fracture occurs due to the excessive softening, the tensile stress in the straight wall reaches rapidly to the tensile strength at the beginning of reverse deep drawing. When 1.5t (t=4.5 mm) blank holding gap is applied at 280 ℃, both the fracture and wrinkle can be avoided, and 420 mm deep cups are drawn successfully. 展开更多
关键词 5a06 aluminum alloy PLATE warm reverse deep drawing forming defect
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5A06铝合金厚板搅拌摩擦焊工艺研究 被引量:11
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作者 李宝华 唐众民 +1 位作者 鄢江武 陈莹 《热加工工艺》 CSCD 北大核心 2011年第11期152-154,共3页
利用正交试验法研究了搅拌摩擦焊工艺参数对20mm厚的5A06-H112铝合金板接头组织和力学性能的影响。结果表明:焊接速度对接头抗拉强度影响最大,而搅拌头轴肩直径和旋转速度依次减小;采用最优组合参数焊接的试样其抗拉强度可达365MPa;由... 利用正交试验法研究了搅拌摩擦焊工艺参数对20mm厚的5A06-H112铝合金板接头组织和力学性能的影响。结果表明:焊接速度对接头抗拉强度影响最大,而搅拌头轴肩直径和旋转速度依次减小;采用最优组合参数焊接的试样其抗拉强度可达365MPa;由于搅拌摩擦焊焊缝中前进侧的熔合过渡区的界面变化急剧,因此断裂往往发生在该熔合过渡区;随着退火温度升高,焊核原本细小的等轴晶粒开始长大,并伴随着β(Mg2Al3)相从α(Al)基体中析出,虽然焊核的晶粒变得粗大,但焊缝的抗拉强度降低的幅度较小。 展开更多
关键词 搅拌摩擦焊 5a06-h112铝合金 正交试验 退火温度
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5A06箱式吊框成形工艺优化研究 被引量:1
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作者 赵征 杨兵兵 王艳芳 《热加工工艺》 CSCD 北大核心 2012年第21期213-215,共3页
针对大尺寸5A06-H112厚铝合金板实心吊框的成形,采用了60mm铝板折弯拼焊后进行机械加工的工艺优化路线,并对5A06厚板的折弯和焊接工艺进行了研究。通过有限元计算,及对实心框静力加载进行的试验和分析证实,采用MIG焊接成形的铝合金实心... 针对大尺寸5A06-H112厚铝合金板实心吊框的成形,采用了60mm铝板折弯拼焊后进行机械加工的工艺优化路线,并对5A06厚板的折弯和焊接工艺进行了研究。通过有限元计算,及对实心框静力加载进行的试验和分析证实,采用MIG焊接成形的铝合金实心吊框的力学性能完全满足使用要求。结果表明,采用MIG大电流多道焊工艺,可以保证焊缝接头强度达到母材的90%以上。组焊而成的实心吊框与整体机加框在载荷范围内有着大体相同的结构力学性能,但整体机加框储备了更多的塑性以应对可能的脆性失效。 展开更多
关键词 5a06-h112铝合金 实心吊框 成形优化
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Effects of Loading Paths on Hydrodynamic Deep Drawing with Independent Radial Hydraulic Pressure of Aluminum Alloy Based on Numerical Simulation 被引量:10
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作者 Xiaojing LIU Yongchao XU Shijian YUAN 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2008年第3期395-399,共5页
In order to meet the forming demands for low plasticity materials and large height-diameter ratio parts, a new process of hydrodynamic deep drawing (HDD) with independent radial hydraulic pressure is proposed. To in... In order to meet the forming demands for low plasticity materials and large height-diameter ratio parts, a new process of hydrodynamic deep drawing (HDD) with independent radial hydraulic pressure is proposed. To investigate the effects of loading paths on the HDD with independent radial hydraulic pressure, the forming process of 5A06 aluminum alloy cylindrical cup with a hemispherical bottom was studied by numerical simulation. By employing the dynamic explicit analytical software ETA/Dynaform based on LS-DYNA3D, the effects of loading paths on the sheet-thickness distribution and surface quality were analyzed. The corresponding relations of the radial hydraulic pressure loading paths and the part's strain status on the forming limit diagram (FLD) were also discussed. The results indicated that a sound match between liquid chamber pressure and independent radial hydraulic pressure could restrain the serious thinning at the hemisphere bottom and that through adjusting radial hydraulic pressure could reduce the radial tensile strain and change the strain paths. Therefore, the drawing limit of the aluminum cylindrical cup with a hemispherical bottom could be increased significantly. 展开更多
关键词 Hydrodynamic deep drawing Numerical simulation Independent radial hydraulic pressure 5a06 aluminum alloy
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5AO6铝合金MIG焊接工艺研究 被引量:6
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作者 赵征 苏生华 杨靖 《电焊机》 北大核心 2011年第1期70-72,共3页
采用脉冲MIG焊,通过对焊前准备、焊接方法、焊接材料、焊接规范等方面进行的试验和分析,确定了5A06-H112铝合金板(δ=5 mm)拼焊工艺规范。结果表明,合理的焊接工艺规范能够有效控制焊缝的成形和焊接气孔的产生。
关键词 5a06-h112铝合金 脉冲MIG 焊接工艺
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Influence of plasma-MIG welding parameters on aluminum weld porosity by orthogonal test 被引量:8
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作者 白岩 高洪明 +2 位作者 吴林 马朝晖 曹能 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2010年第8期1392-1396,共5页
The plasma-MIG welding torch was developed.5A06 aluminum alloys with V-grooves were welded in a single pass in the plasma-MIG welding process and the joints were examined by X-ray diffractometry analysis and mechanica... The plasma-MIG welding torch was developed.5A06 aluminum alloys with V-grooves were welded in a single pass in the plasma-MIG welding process and the joints were examined by X-ray diffractometry analysis and mechanical tests.The orthogonal experimental design was used to study the influence of plasma-MIG welding parameters on the aluminum weld porosity.The mixed orthogonal matrix L16(4 4×2 3) and analysis of variance (ANOVA)technique were employed to optimize the welding parameters.The experimental results indicate that the effect of plasma gas flow rate is dominant,the secondary factors are MIG welding voltage,welding speed,wire feed rate and plasma current in turn.Confirmation experiments were conducted under optimum conditions and there was almost no porosity in the welded joints,thus good mechanical performance joints were obtained. 展开更多
关键词 plasma-MIG welding POROSITY 5a06 aluminum alloy orthogonal experimental design
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铝合金厚板电子束焊工艺优化研究 被引量:3
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作者 王艳芳 赵征 杨兵兵 《热加工工艺》 CSCD 北大核心 2013年第17期164-166,共3页
通过对60 mm厚5A06铝合金进行电子束焊工艺试验,分析了其电子束焊焊接特点,提出了合理的电子束焊焊接工艺,同时还进行了焊缝质量检验,分析了焊接接头的显微组织并测试了其力学性能。结果表明:强化表面处理、调整工艺参数、采用中等偏下... 通过对60 mm厚5A06铝合金进行电子束焊工艺试验,分析了其电子束焊焊接特点,提出了合理的电子束焊焊接工艺,同时还进行了焊缝质量检验,分析了焊接接头的显微组织并测试了其力学性能。结果表明:强化表面处理、调整工艺参数、采用中等偏下的焊接速度、采用重熔修饰焊是保证良好焊接质量的关键点;在此基础上确定了5A06铝合金厚板电子束焊工艺规范,且焊缝强度可以达到母材强度的80%以上。 展开更多
关键词 5a06-h112 电子束焊 焊接工艺
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大尺寸铝合金箱型件焊接成形工艺研究 被引量:2
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作者 赵征 李京龙 +1 位作者 李碧芳 张云燕 《铸造技术》 EI CAS 北大核心 2006年第9期957-960,共4页
针对采用5A06-H112厚度5 mm铝合金板焊接成型的大尺寸箱式存储运输装置的焊接生产过程,通过对焊前准备、焊接方法、焊接材料、焊接规范、焊接工装、焊后检查以及缺陷补焊等方面进行的试验和分析,确定了5A06-H112铝合金板的拼焊工艺和变... 针对采用5A06-H112厚度5 mm铝合金板焊接成型的大尺寸箱式存储运输装置的焊接生产过程,通过对焊前准备、焊接方法、焊接材料、焊接规范、焊接工装、焊后检查以及缺陷补焊等方面进行的试验和分析,确定了5A06-H112铝合金板的拼焊工艺和变形控制方法。结果表明,该工艺过程有效保证了大尺寸铝合金箱型件拼焊的焊接质量,满足了使用要求。 展开更多
关键词 5a06-h112铝合金 焊接工艺 箱型件
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铝合金焊接结构的应力松弛及控制 被引量:1
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作者 赵征 王艳芳 《宇航材料工艺》 CAS CSCD 北大核心 2012年第5期59-63,共5页
针对生产现场大尺寸5A06-H112铝合金板箱形件拼焊制造过程中存在应力松弛的问题,对多种焊接工艺方法进行了研究。通过对不同焊接接头的力学性能试验、残余应力测试、焊接金相和硬度测量结果对比显示,铝合金焊接结构的应力变化存在先升... 针对生产现场大尺寸5A06-H112铝合金板箱形件拼焊制造过程中存在应力松弛的问题,对多种焊接工艺方法进行了研究。通过对不同焊接接头的力学性能试验、残余应力测试、焊接金相和硬度测量结果对比显示,铝合金焊接结构的应力变化存在先升后降的变化趋势,而TIG焊由于采用较小的线能量和多层焊,较MIG焊其应力松弛的程度存在差异。结果表明,增加焊后时效时间8~10 d,并采用TIG焊技术将有效减小铝合金焊接结构的应力松弛,使端头下沉减少50%左右,满足了设计图纸的要求。 展开更多
关键词 5a06-h112铝合金 应力松弛 控制
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铝合金箱体加强框组焊工艺改进研究
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作者 赵征 《方舱与地面设备》 2011年第3期23-26,共4页
为了对铝舍金箱体加强框组焊采用的手工塞焊工艺进行改进,针对5A06-H11285mm铝合金板摩擦点焊焊接过程,通过对焊前准备、焊接方法、焊接规范等方面进行的试验和分析,确定了5A06-H112铝舍金板摩擦点焊焊接工艺规范。结果表明,合理的... 为了对铝舍金箱体加强框组焊采用的手工塞焊工艺进行改进,针对5A06-H11285mm铝合金板摩擦点焊焊接过程,通过对焊前准备、焊接方法、焊接规范等方面进行的试验和分析,确定了5A06-H112铝舍金板摩擦点焊焊接工艺规范。结果表明,合理的焊接工艺规范实现了5mm+5mm铝合金板的点焊连接,完全可以实现对手工塞焊过程的替代。 展开更多
关键词 5a06-h112铝合金 摩擦点焊 焊接工艺
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铝合金箱式吊框成形工艺研究
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作者 赵征 《方舱与地面设备》 2011年第2期27-32,共6页
针对采用5A06-H112δ60mm铝合金板的大尺寸箱式吊框的成形制造,通过采用有限元计算,及对吊具静力加载等方面进行的试验和分析,确定了5A06-H112铝合金厚板吊框的成形工艺方法。结果表明,优化箱式吊框的工艺路线将降低生产成本,并有... 针对采用5A06-H112δ60mm铝合金板的大尺寸箱式吊框的成形制造,通过采用有限元计算,及对吊具静力加载等方面进行的试验和分析,确定了5A06-H112铝合金厚板吊框的成形工艺方法。结果表明,优化箱式吊框的工艺路线将降低生产成本,并有效提高材料的利用率。 展开更多
关键词 5a06-h112铝舍金 箱式吊框 成形
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箱式储运装置弓形加强框制造工艺研究
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作者 赵征 《方舱与地面设备》 2010年第1期23-26,共4页
摘要针对采用5A06-H11285mm铝合金板的大尺寸箱式储运装置加强框的焊接成型,通过钣金工艺改进,及对焊接方法、焊接规范等方面进行的试验和分析,确定了5A06-H112铝合金板加强框的焊接成形工艺方法。
关键词 5a06-h112铝合金 加强框 焊接成形
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Prediction of fatigue crack growth rate for smallsized CIET specimens based on low cycle fatigue properties 被引量:2
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作者 Chen BAO Lixun CAI Kaikai SHI 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2018年第4期740-748,共9页
Based on experiments of low cycle fatigue for 5083-H112 aluminum alloy, two energybased predictive models have been introduced to predict the fatigue crack growth behaviors of traditional Compact Tension(CT) and sma... Based on experiments of low cycle fatigue for 5083-H112 aluminum alloy, two energybased predictive models have been introduced to predict the fatigue crack growth behaviors of traditional Compact Tension(CT) and small-sized C-shaped Inside Edge-notched Tension(CIET)specimens with different thicknesses and load ratios. Different values of the effective stress ratio U are employed in the theoretical fatigue crack growth models to correct the effect of crack closure.Results indicate that the two predictive models show different capacities of predicting the fatigue crack growth behaviors of CIET and CT specimens with different thicknesses and load ratios.The accuracy of predicted results of the two models is strongly affected by the method for determination of the effective stress ratio U. Finally, the energy-based Shi&Cai model with crack closure correction by means of Newman's method is highly recommended in prediction of fatigue crack growth of CIET specimens via low cycle fatigue properties. 展开更多
关键词 CIET specimen Crack closure correction Energy-based fatigue crack growth predictive model Low cycle fatigue 5083-h112 aluminum alloy
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Mechanics analysis of axisymmetric thin-walled part in warm sheet hydroforming 被引量:2
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作者 Yang Xiying Lang Lihui +1 位作者 Liu Kangning Liu Baosheng 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2015年第5期1546-1554,共9页
To obtain the influence of fluid pressure and temperature on warm hydroforming of 5A06-O aluminum alloy sheet, the unified mechanics equilibrium equations, which take through- thickness normal stress and friction into... To obtain the influence of fluid pressure and temperature on warm hydroforming of 5A06-O aluminum alloy sheet, the unified mechanics equilibrium equations, which take through- thickness normal stress and friction into account, were established in spherical coordinate system. The distribution of through-thickness normal stress in the thickness direction was determined. The relation between through-thickness normal stress and fluid pressure was also analyzed in different regions of cylindrical cup. Based on the method of subtracting one increasing function from another, the constitutive equation of 5A06-O applied to warm hydroforming was established and in a good agreement with uniaxial tensile data. Based on whether the thickness variation was taken into account, two mechanic models were established to do the comparative study. The results for the studied case show that the calculated stress values are pretty close according to the two models and consistent with results of finite element analysis; the thickness distribution in flange computed by the second model conforms to the experimental data. Finally, the influences of fluid pressure on the flange thickness and radial stress were analyzed. 展开更多
关键词 5a06-O aluminum alloy:Constitutive equations:Fluid pressure:Through-thickness normalstress Warm sheet hydroforming
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