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al. Effects of rare earths on corrosion behavior of AZ91 Mg alloy[J]. The Chinese Journal of Nonferrous Metals, 2021, 31(7): 1798-1808. DOI: 10.11817/j.ysxb.1004.0609.2021-39759 镁合金因其密度低,比强度以及比模量高等优良特...(La, Ce)混合稀土对β相的碎化作用不及稀土Y的作用明显,仍然有较多的骨骼状β相分布在晶界上. 表1 镁合金中主要合金元素的含量 Table 1 Chemical composition of Mg alloy 图1 添加不同稀土前后镁合金的显微组织 Fig. 1 Microstructures of Mg alloy before......
the second phase are adequately refined by large deformation. Key words: wrought magnesium alloy; AZ31 Mg alloy; rare earth; second phase 稀土元素常被添加到镁合金中提高合金的性 能[1].LIU等[2]研究发现AM60合金中添加Ce和La提高... mechanism of Mg-Al-Zn(RE) magnesium alloy[J]. Rare Metal Materials and Engineering, 2006, 35(11): 1748-1752. [11] 郑伟超, 李双寿, 汤 彬, 曾大本. 稀土对AZ31B变形镁合金组织和力学性能的影响[J]. 中国有色金属学报, 2006, 16(2): 197-204.ZHENG Wei......
,Mg2Si颗粒呈细小,弥散分布；合金的力学性能随往复挤压道次的增加而显著提高. 关键词:Mg-4Al-2Si镁合金；往复挤压；动态再结晶；力学性能 中图分类号:TG 376.2 文献标识码:A Structure refinement and mechanical properties of Mg-4Al-2Si Mg alloy... Mg2Si particles. The mechanical properties of alloys are improved obviously with increasing reciprocating extrusion passes. Key words: Mg-4Al-2Si Mg alloy; reciprocating extrusion; dynamic......
temperature on AM60 Mg alloy semi-solid slurry prepared by self-inoculation method (Ⅰ) LI Yuan-dong1, 2, YANG Jian1, MA Ying1, 2, QU Jun-feng1, ZHANG Peng1 (1. State Key Laboratory of Gansu... of Technology, Lanzhou 730050, China) Abstract: The semi-solid slurry of AM60 Mg alloy was prepared by a novel self-inoculation method(SIM). The effect of pouring temperature on the semi-solid slurry......
的光学显微组织及SEM像如图1所示. 图1 ZK20和ZK20+0.5Nd镁合金经不同温度退火10 h后的光学显微组织和SEM像 Fig.1 Optical microstructures and SEM images of ZK20 and ZK20+0.5Nd Mg alloy after homogenizing annealing at different...(OM),扫描电镜(SEM)和万能材料试验机,对ZK20和ZK20+0.5Nd镁合金不同温度均匀化退火后的组织以及挤压态合金的力学性能进行研究.退火温度分别为603,633,663,693 K,保温时间均为10 h.结果表明:均匀化退火使铸锭中的Mg-Zn和Mg-Nd-Zn合金相不断固溶到基体中,同时枝晶偏析大幅度降低；与未均匀化相比,ZK20+0.5Nd合金均匀化退火后挤压,挤压态塑性有较大幅度提高......
镁合金塑性变形机理研究进展刘庆1(1.重庆市重庆大学材料科学与工程学院国家镁合金材料工程研究中心)摘 要:简述了具有密排六方(hcp)结构镁合金材料各种可能的滑移和孪生系统及其临界切变应力;以镁合金塑性变形机理为主线,分别对单晶和多晶镁合金材料塑性变形行为及微观机理的影响规律,轧制,挤压及不同严重塑性变形模式下镁合金织构的形成机理,形变镁合金材料退火过程中回复与再结晶及镁合金材料在热变形过程中的动态再结晶机理,以及沉淀硬化镁合金塑性变形机理,特别是沉淀相与位错滑移及孪生的交互作用机理等进行了总结与评述.同时,对高成形性镁合金及提高镁合金塑性成形能力的塑性变形机理进行了讨论. 关键词:镁合金； 塑性变形； 机械孪生； 位错滑移； 织构； 各向异性； 再结晶......
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......
Desorption behaviour and microstructure change of nanostructured hydrided AZ31 Mg alloy powders WANG Heng(王 珩), HU Lian-xi(胡连喜), YUAN Yuan(袁 媛), WANG Er-de(王尔德) School of Materials...; Abstract: In order to optimize the dehydriding process for producing nanocrystalline Mg alloy powders......
元素周围Mg-Mg原子之间的结合能等,增加非基面滑移的可能性,减弱基面滑移及孪生所占的比率,有效地弱化镁合金的织构. 关键词:变形镁合金；织构；基面滑移；孪生；织构 中图分类号:TG146.2 文献标志码:A Texture and texture optimization of wrought Mg alloy...)面垂直于挤压方向,而在棒材挤压过程中,在检测区域内所有晶粒基面平行于挤压方向. 图4 镁合金挤压棒材丝织构晶粒取向示意图 Fig.4 Schematic diagram of orientation of grains after extrusion of Mg alloy 图5 镁合金挤压后(0001)面极图[14-15] Fig.5......
