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环伏安曲线 Fig.1 Cyclic voltammograms (CVs) of dissolution-deposition for magnesium on AZ31 alloy and commercial pure Mg electrodes 2.2 溶解-沉积循环性能 AZ31合金与工业纯镁电极前30次的溶解-沉积循环性能如图2所示.其中,对应于充电过程是... of magnesium on AZ31 alloy (a) and commercial pure Mg (b) electrodes in initial 30 cycles 为进一步比较镁在AZ31合金与工业纯镁上的长期溶解-沉积性能,2种电极的长期循环性能对比如图3所示.由图3可知:随着循环次数的增加,镁在2种电极上都表现出良好的重复性,且过电位稳定；当循环进行到202次时,工业纯镁电极的电位突然下......
Superplasticity of fine-grained AZ31 Mg alloy sheets YIN De-liang(尹德良), ZHANG Kai-feng(张凯锋),WANG Guo-feng(王国峰), HAN Wen-bo(韩文波) (School of Material Science and Engineering, Harbin Institute of Technology, Harbin 150001, China) Abstract: Superplastic mechanical properties of fine-grained AZ31 Mg alloy sheets in the temperature range of 250-450℃ and strain rate range of 0.7×10-3-1.4×10-1s-1......
alloy 图2所示为挤压比为6.25?1的平行于挤压方向的组织.由图2可以看出,挤压样品基本上为沿挤压轴向的细长条晶两侧分布的等轴细晶的混晶组织,平均晶粒尺寸为8.28 ?m,而细晶粒仅为5 ?m,大晶粒则达到50 ?m.由此可知,在热挤压过程中出现再结晶.图2(a)的取向成像图则表明,挤压后AZ31镁合金的择优取向,图中每种颜色代表一个晶体学取向,颜色相近则晶粒的取向相近.由图2(b)得知,挤压后大部分晶粒的(0001)基面平行于挤压方向. 图2 热挤压AZ31镁合金的取向成像图和取向极图(挤压比为6.25?1) Fig.2 Orientation map (a) and {0002}, and pole figures (b) of extruded AZ31 magnesium alloy with extrusion......
that the dominant deformation mechanism of the samples under WR is twinning. 3.3 Texture of samples Figure 3 shows the (0001), and pole figures of AZ31 Mg alloy sheets produced by warm rolling (WR... and Compounds, 2012, 536: 94-105. [12] XU Z H, TANG G Y, TIAN S Q, DING F, TIAN H Y. Research of electroplastic rolling of AZ31 Mg alloy strip [J]. Journal of Materials Processing Technology, 2007, 182......
将表层起伏控制在可接受的范围. 关键词:AZ31镁合金；过共晶渗层；耐蚀性；纳米硬度 中图分类号:TG 174.4 文献标识码:A Processes and properties of liquid aluminized coating on AZ31 magnesium alloy TAN... hardness and corrosion resistance. The results show that a solidification-melting process occurs on the surface of AZ31 magnesium alloy when it is aluminized at 480 ℃. Mg17Al12 and Mg-Al supersaturated solid......
再结晶的发生增加了软化作用,使流变应力下降,随变形的进一步进行流变应力达到稳定水平线[17]. 图1 不同条件下AZ31镁合金的真应力-应变曲线 Fig.1 Curves of true stress-strain for AZ31 Mg alloy under different conditions: (a) 250 ℃; (b) 350 ℃; (c..., MUKAI T, KOHZU M. Deformation mechanism in a coarse-grained Mg-Al-Zn alloy at elevated temperatures[J]. International Journal of Plasticity, 2001,17(3): 387?397. [11] 黄光胜, 汪凌云, 黄光杰. AZ31镁合金高温本构方程[J......
and corrosion resistance of magnesium alloy has not been systematically investigated. AZ31 Mg alloy is one of the popular wrought alloys which have received the most attention regarding to the structure..., respectively. According to the EDS analysis and XRD analysis, the phases composition of AZ31 magnesium alloy simultaneously added with 0.5%Sr +1.5%Y are α-Mg, β-Mg17Al12 , Al4Sr , Al2Y and Al3Y. 3.2......
. Key words: Al 7075 alloy; Mg AZ31 alloy; diffusion bonding; intermetallic compounds; interfacial transition zone; microstructure; mechanical properties 1 Introduction Aluminum and its alloys are widely...Al 7075和 Mg AZ31合金.采用扫描电子显微镜,X射线能谱和X射线衍射分析合金的显微组织演变,相分析和元素分布.结果表明:25 MPa为最佳的压力条件,在此条件下接头发生最小的塑性变形；在界面过渡区可观察到含不同金属间化合物如Al12Mg17, Al3Mg2 和 α(Al)的固溶体反应层；随着温度的升高,反应层的厚度增大,更多的铝原子扩散进入镁合金,且界面朝着铝合金移动；在温度440......
A, 2006, 415: 309?316. [13] 田素贵, 孙根荣, 徐永波. AZ31镁合金蠕变初期的变形特征[J]. 金属学报, 2005, 41(4): 375?379.TIAN Su-gui, SUN Gen-rong, XU Yong-bo. Deformation features of AZ31 Mg-alloy in initial period of high.... 关键词: AZ31镁合金；高温蠕变；应力指数 中图分类号:TG 113.2 文献标识码:A Effect of zinc content on high temperature creep property of AZ31 magnesium alloy ZHANG Shi-chang, ZHU Ming, ZHAO Gang......
): 1161-1193. [4] CHINO Y, KIMURA K, HAKAMADA M, MABUCHI M. Mechanical anisotropy due to twinning in an extruded AZ31 Mg alloy [J]. Materials Science and Engineering A, 2008, 485(1-2): 311-317. [5... Plastic anisotropy and fracture behavior of AZ31 magnesium alloy LIU Pei 1, XIN Yun-chang1, LIU Qing1, 2 1. College of Materials Science and Engineering, Chongqing University, Chongqing 400044......
