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拟方法,材料的微观组织随时间的演化可以通过分别解Ginzburg-Landau方程和 Cahn-Hilliard扩散方程而得到, F是系统的自由能项,各向同性的单相系统中该函数的一个合理表达如下[11] 本文作者以AZ31镁合金板材为例进行模拟并且以文献[12]中的试验数据作为标准与模拟结果进行比较.因此,合金成分为w(Al)=3%,w(Zn)=1%,余量为Mg.再结晶温度为250,300...; (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......
encountered in Mg alloy castings [3,6,28]. In higher Al-containing alloys (i.e AZ61 and 91), lamellar and partially divorced β eutectics appear (Fig. 4). As reported previously [12,14,29], the eutectic with the lamellar structure in AZ91 Mg alloy is formed adjacent to the partially divorced eutectics in accord with the present work. It should mentioned that some of the Al-Mn phases were......
Trans. Nonferrous Met. Soc. China 24(2014) 1346-1351 Melting purification process and refining effect of 5083 Al-Mg alloy Cheng-guo MA, Shu-yan QI, Shuang LI, Huan-yan XU, Xiu-lan HE School... of Al alloy with high Mg content, which leads to poor final product quality, the melting purification process and the influences of the refiner on the microstructure and defect of 5083 alloy were......
treatment for the Mg,Al-hydrotalcite conversion coating was as follows. Mg alloy was treated first in acidic HCO3-/CO32- aqueous for precursor layer formation on Mg alloy surface and then in alkaline HCO3-/CO32- aqueous to form a crystallized Mg,Al-hydrotalcite coating. Duration of an Mg,Al-hydrotalcite coating on Mg alloy surface was reduced from 12 h to 4 h by the conversion treatment......
ICP-AES法测定绿柱石中铍硅铝铁镁钙钛和锰张永盛,谭雪英摘 要:试样用Na2O2分解,用HNO3中和酸化,定容后不经分离富集,取部分溶液适当稀释,ICP-AES测定主,次量元素.回收率:主量元素100~102%,次量元素99~109%,RSD≤7.4%,与标样值吻合.关键词:ICP-AES;绿柱石;Be,Si,Al,Ca,Mg,Fe,Mn,Ti;......
Influence of Ga and Hg on microstructure and electrochemical corrosion behavior of Mg alloy anode materials FENG Yan(冯 艳), WANG Ri-chu(王日初), YU Kun(余 琨), PENG Chao-Qun(彭超群), LI Wen-xian(黎文献... and Ga was put forward. Magnesium atoms are dissolved in liquid Hg and Ga to form amalgam and undergo severe oxidation at the amalgam/electrolyte interface. Key words: Mg alloy anode......
Shao-xiang, ZHANG Xiao-nong, ZHAO Chang-li, LI Jia-nan, SONG Yang, et al. Research on an Mg-Zn alloy as a degradable biomaterial[J/OL]. Acta Biomater, 2009, doi: 10.1016/j.actbio. 2009-06-028. [10...文章编号:1004-0609(2010)10-1989-09 新型医用Mg-Nd-Zn-Zr镁合金在模拟体液中的降解行为 张 佳1,宗 阳1,袁广银1, 2,常建卫1,付鹏怀1,丁文江1, 2 (1. 上海交通大学 轻合金精密成型国家工程研究中心,上海 200240； 2. 上海交通大学 金属基复合材料国家重点实验室,上海 200240) 摘 要:采......
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words: ZK60 alloy; ME20 alloy; magnesium alloy melt; Mg melt; 1,1,1,2-tetrafluoroethane; alloying element; oxidation 1 Introduction Molten magnesium has an extremely high affinity for oxygen and high...]. Moreover, some difference in oxidation behaviour between the melts has also been found. For example, LIU et al [8] compared the oxidation behaviour of molten AZ91D magnesium alloy with molten......
表面扩渗Al,Zn处理对ZM5镁合金性能的影响 徐可为1,马幼平1,温维新2,刘鹏飞2,潘希德1 (1.西安交通大学金属材料强度国家重点实验室,陕西,西安,710049;2.西安建筑科技大学,陕西,西安,710055) 摘要:通过铝锌(Al,Zn)混合粉对ZM5镁合金进行了表面固态扩渗铝锌(Al,Zn)处理,在衬底形成了Mg-Al-Zn合金层.研究结果表明:Mg-Al-Zn合金层主要由Mg-Al-Zn固溶体和Mg-Al-Zn金属间化合物(Al6Mg10Zn,Al5MgllZn4)组成,该合金层不仅使ZM5镁合金表面合金层显微硬度显著提高,而且在盐水浸泡腐蚀过程中,在衬底与腐蚀介质之间起到了良好的屏障作用,从而赋予试样良好的腐蚀性能. 关键词:ZM5镁合金; Al,Zn混合粉; 渗金属; 硬度; 腐蚀; [全文内容正在添加中] ......
