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alloys[J]. Acta Metall Sin, 2001, 37(7): 673-685. [3] 郑 荣, 林 然. AZ31B镁合金薄板TIG焊接[J]. 焊接, 2003(4): 43-44.ZHENG Rong, LIN Ran. TIG welding of AZ31B Mg alloy[J]. Welding & Joining, 2003(4): 43-44. [4] 苗玉刚, 刘黎明, 赵 杰, 于德凯. 变形镁合金熔焊接头组织特征分析[J]. 焊接学报, 2003, 24(2): 63-66.MIAO Yu-gang, LIU Li-ming, ZHAO Jie, YU De-kai. Microstructure feature analysis of fusion welded joint of wrought Mg-alloy[J......
Effect of CaO composition on oxidation and burning behaviors of AM50 Mg alloy Jin-Kyu LEE, Shae K. KIM Advanced Material Division, Korea Institute of Industrial Technology, 7-47... into AM50 Mg alloys. Key words: Mg alloy; CaO; oxidation behavior; burning behavior 1 Introduction AM50 Mg alloy has already been applied to certain automobile parts, such as instrument panel, seat......
words: magnesium alloy AZ91D; low-voltage electric current pulse; semi-solid alloy; partial remelting 利用半固态成形技术, 可以有效细化铸造组织和提高铸件性能[1, 2]. 近年来, 对于半固态镁合金也开展了研究, 结果表明半固态成形可有效解决镁合金晶粒粗大等问题[3... current pulses on the microstructure of magnesium alloy AZ91D[J]. Material Science Forum, 2005, 488-489: 201-204. [12]乐启炽, 张新建, 崔建忠, 等. AZ91D镁合金近液相线铸造半固态坯料的部分重熔[J]. 金属学报, 2002, 38(12): 1266-1272. LE Qi......
)对凝固组织进行观察发现(图9),初生的α-Mg相(α1),依附于α1生长得到的α2,重新形核并长大的等轴晶α3及共晶相中的α-Mg连在一起,在组织和化学成分方面很难区分. 图9 AZ91D镁合金触变成形组织背散射电子像 Fig.9 Back scattered electron image of thixoformed AZ91D alloy 4 结论...显微镜和扫描电镜对AZ91D镁合金组织进行分析,研究AZ91D镁合金在半固态触变成形过程中的组织特征与二次凝固行为.结果表明,成形件的充型过程是按先底部后上部的顺序填充.触变成形件中心线部位的组织中初生相含量比边缘部位的高,产生宏观上的液相偏析.沿高度方向上,中心线处的初生相颗粒尺寸从上部到底部,先减小后增大.二次凝固过程包括3个阶段:第1阶段是初生α-Mg相生长;第2阶段是液相内部重新形核并生长......
; 文献标志码:A Effects of Mg and Mn element on microstructure and mechanical properties of Al-Si alloy HUANG Xiao-feng1, FENG Kai1, XIE Rui2 (1. State Key Laboratory of Gansu Advanced... of optical micrograph and other instruments, the microstructures and shapes of transcocrystallized Al-Si alloy treated by Mg and Mn complex modifications were studied. The results indicate that the mass......
, rolling force should not be large, otherwise it will cause heat cracking. Key words: Mg alloy; thermal simulation; roll casting; microstructure  ...轧态AZ31B合金进行背散射电子形貌观察,晶界处存在白色析出相;对其进行能谱分析,发现除Mg之外,其Al和Zn含量也较高. 参考文献: [1] 黎文献. 镁及镁合金[M]. 长沙: 中南大学出版社, 2005: 2-5, 289-295, 302-308.LI Wen-xian. Magnesium and magnesium alloys[M]. Changsha: Central......
fraction in the polycrystalline. Key words: AZ31 Mg alloy; twinning deformation; heterogeneous deformation; polycrystalline texture; orientation deflection 在常温下,由于镁的HCP晶体结构具有弱对称性以及活动滑移系数量不足从而造成强烈的塑性各向...向名义应变也是20%.在上述条件下进行计算,可分析单调拉伸与压缩的应力应变响应及屈服强度的不对称性. 图3 镁合金轧制板初始织构 Fig. 3 Initial textures of AZ31 Mg alloy sheet 3.2 挤压棒与轧制板成形模拟的材料初始取向与边界条件 挤压棒与轧制板是常见的变形镁合金材料.对挤压棒的成形过程,可采用等双轴压缩近似模拟......
准晶增强镁,铝基复合材料的研究进展 程素玲1,杨根仓1,朱满1 (1.西北工业大学凝固技术国家重点实验室,西安,710072) 摘要:综述了利用准晶作为镁,铝合金增强相的研究进展.Mg_3Zn_6Y准晶的界面能低,与α-Mg基体之间形成稳定的界面结合,在高温变形过程中,准晶本身不发生粗化且可以抑制基体组织演化,因此,Mg_3Zn_6Y准晶增强变形Mg基复合材料具有中等强度和较高的室温,高温...; interracial reaction; Mg alloy; Al alloy; [全文内容正在添加中] ......
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Applications of carbonic acid solution for developing conversion coatings on Mg alloy YU Bing-lung(余秉隆), LIN Jun-kai(林俊凱), UAN Jun-yen(汪俊延) Department of Materials Science and Engineering...-hydrotalcite (Mg6Al2(OH)16CO3·4H2O) layer and/or calcium carbonate (CaCO3) layer on Mg alloy in a carbonic acid solution system (aqueous HCO3-/CO32- or Ca2+/HCO3-) at 50 ?C were reviewed. Conversion......