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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......
稀土对AM60B镁合金组织遗传性和性能的影响 孙广平1,周宏1,刘畅1,李伟1 (1.吉林大学材料科学与工程学院,吉林长春,130025) 摘要:针对采用纯AM60B镁合金原料及不同量的镁合金铸件废料生产AM60B镁合金的方法,研究了稀土元素对其组织和性能的影响.结果表明:不论是否加入废料,当稀土合金的加入量为0.5%时,组织遗传性仍然存在;随着加入量的逐渐增加,这种遗传性开始受到破坏,当加入量为1.0%时,AM60B镁合金的组织遗传性开始消失;镁合金的力学性能随着废料加入量的增加明显下降;当废料加入量一定时,随着稀土合金加入量的增加,合金的抗拉强度和伸长率都有明显改善,而当加入量达到1.0%以后,其性能增加的幅度开始趋缓,并且伸长率已呈现下降的趋势. 关键词:镁合金; 组织; 性能; 遗传性; [全文内容正在添加中] ......
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......
因数,涂层合金的表面变形能力提高,该阶段质量磨损速率随载荷增加,趋势变得缓慢. 关键词:AZ91D镁合金；微弧氧化；陶瓷涂层；摩擦磨损 中图分类号:TG 115.221.5; TH 117.3 文献标识码: A Dry sliding wear behavior of AZ91D Mg alloy... pattern (b) of coating on AZ91D Mg alloy produced by MAO 2.2 微弧氧化涂层合金的磨损规律 图2所示为涂层合金磨损质量损失率随载荷的变化.由图2可看出,在固定的滑动速率下,施加载荷越大,涂层AZ91D镁合金的磨损速率越大.AZ91D镁合金的密度为1.8 g/mm3,硅酸镁陶瓷密度为2.0~2.5 g/mm3,两者差距不大.考虑到难......
resistance. Key words: AZ91D Mg alloy; permanent mould casting; micro-arc oxidation; current density; corrosion resistance; wear resistance ... of the ceramic coating obtained through microarc oxidation on the AZ31 magnesium alloy surfaces[J]. Surface and Coating Technology, 2007, 201(9/11): 4905?4908. [11] 梁永政. 镁合金表面微弧氧化工艺的研究[D]. 兰州: 兰州理工大学......
. 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... material protuberances and at surface contacts by mechanical pressure. After that, due to the lower strength of the Mg alloy than Al alloy, with increasing temperature, plastic deformation occurred......
, superelasticity, shape memory effect and damping capacity are greatly improved. Key words: porous NiTi alloy; microwave sintering; Mg space holder; superelasticity; damping capacity 1 Introduction Nickel... vapor can provide a reducing atmosphere to prevent oxidation of titanium [14]. Thirdly, even the partial residue of Mg does not affect the properties of titanium alloy, and is even beneficial to its......
69315-516, Iran; 2. Department of Engineering, Kermanshah Branch, Islamic Azad University, Kermanshah 6718997551, Iran Received 1 February 2015; accepted 20 July 2015 Abstract: 7075 Al alloy and AZ31B Mg...% at the welding performed for 60 min. Key words: Al alloy; Mg alloy; diffusion welding; welding temperature; welding duration 1 Introduction Diffusion welding (DFW) is a joining process wherein......
higher than that in the base metal due to the second phase strengthening of β-Mg17(Al, Zn)12 formed in the weld. Key words: Mg alloy; gas metal arc welding; porosity; microstructure; second phase... are often found in the weld during fusion welding of magnesium alloy. ZHAO and DEBROY [8] conducted laser welding of AM60B casting magnesium alloy and suggested that the porosity in the weld could......
; (5) 图1 AZ31镁合金在250, 300, 350和400 ℃的自由能曲线 Fig.1 Free energy curves of AZ31 Mg alloy at 250, 300, 350 and 400 ℃: (a) By software Thermocalc... was established to simulate the realistic spatio-temporal microstructure evolution in recrystallization of Mg alloy using the phase field approach. The rules were proposed to decide the real physical......
