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]. Trans Nonferrous Met Soc China, 2007, 17(6): 1175-1180. [7] WANG Xiao-feng, ZHAO Jiu-zhou, HE Jie, HU Zhuang-qi. Hot rolling characteristics of spray-formed AZ91 magnesium alloy [J]. Trans......
elements in Mg-8.5wt%Li and AZ91 alloys during tensile tests for superplasticity[J]. Materials Science and Technology, 2003, 19(12): 1642-1647. [20] TAKIGAWA Y, AGUIRRE J V, TALEFF E M, HIGASHI K......
. 特别是锥面滑移, 能协调c轴压缩及垂直于c轴方向的延伸变形, 使镁合金的各向异性减弱. 有研究表明, 一些二级孪生系统也有类似作用. 3.2 织构对镁合金力学性能的影响 具有织构的多晶镁合金, 其力学性能受晶粒度与晶粒取向分布函数的综合影响, 力学行为表现出与单晶镁合金相似的某些特征. Mabuchi等[25]用常规热挤压及ECAP工艺制备了具有相同晶粒度的AZ91镁合金, 室......
and it can provide effective protection. DUAN et al[12] and CAO et al[24] have also reported that the anodic coating of AZ91 magnesium alloy has a two-layer structure[12, 24] under DC and AC anodization......
, 2005, 59(29/30): 3876-3880. [34] KIM W J, PARK J D, KIM W Y. Effect of differential speed rolling on microstructure and mechanical properties of an AZ91 magnesium alloy[J]. Journal of Alloys......
基体与涂层的结合力差.PARCO等[7]在AZ91和AE42基体上等离子喷涂Al,NiAl5及Al2O3涂层,研究了不同涂层颗粒的扁平化效应和涂层的粘结机理.TSUJIKAWA等[8]在3 mm冷轧Mg-Li板上等离子喷涂50~300 μm厚的纯Al涂层,发现喷涂过程基体温升很小,耐腐蚀性能得到改善.BAKKAR等[9]通过"等离子喷涂+激光重熔"两步法制备Al-12Si涂层,显著提高了短纤维强化......
] 许 越, 陈 湘, 吕祖舜, 李英杰. AZ91镁合金表面稀土转化膜的制备及耐蚀性能研究[J]. 中国稀土学报, 2005, 23(1): 40-43. XU Yue, CHEN Xiang, L? Zu-shun, LI Ying-jie. Preparation and corrosion resistance of rare earth conversion coatings......
electrolyte using potassium acid phthalate (KAP) as additive was studied for the PEO treatment of AZ91 magnesium alloy. Compared with other additives used in the PEO process, such as phosphate [13,14......
: Appl Phys, 2006, 39: 394-400. [15] ABDERRAZAK K, BANNOUR S, MHIRI H, LEPALEC G, AUTRIC M. Numerical and experimental study of molten pool formation during continuous laser welding of AZ91 magnesium......
,扩大其应用范围已成为当务之急.其中,开发蠕变抗力较高的耐热镁合金是目前研究的热点之一. Mg-Al-Si合金是20世纪70年代德国大众汽车公司开发的压铸耐热镁合金.当温度为170 ℃ 时,AS41的蠕变强度比AZ91和AM60的高,具有良好的伸长率,屈服强度和抗拉强度,可应用于汽车发动机的变速箱,电动机架等.该合金具有良好高温性能的主要原因是在晶界处形成细小弥散分布的稳定析出相 Mg2Si.因此......