不同铝添加量对镁合金显微组织及大气腐蚀行为的影响

中国腐蚀与防护学报

2007, Vol. 27

Issue (5): 269-273

研究报告

本期目录 | 过刊浏览

不同铝添加量对镁合金显微组织及大气腐蚀行为的影响

贾瑞灵;严川伟;王福会

哈尔滨工程大学材料科学与化学工程学院;金属腐蚀与防护国家重点实验室;内蒙古工业大学材料学院

Influence of Aluminum Content on Microstructure and Atmospheric Corrosion Behaviorof Magnesium-Aluminum Alloys

;Chuanwei Yan;

哈尔滨工程大学材料科学与化学工程学院;金属腐蚀与防护国家重点实验室;内蒙古工业大学材料学院

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摘要: 利用SEM、EDX、XRD等分析技术分析3种不同Al添加量的镁合金的显微组织和相结构，经实验室模拟金属大气腐蚀实验后观察其腐蚀形貌。结果表明，随着Al含量的增加，Mg-Al合金中β相（Mg17Al12 ）的数量明显增加；不存在β相的镁合金表面腐蚀产物较少，基体腐蚀较浅，存在β相的镁合金表面腐蚀产物较多，基体出现较深的腐蚀坑；β相数量与分布的不同是镁合金腐蚀形貌产生差异的主要原因。

关键词 ：镁合金, 铝含量, 显微组织, 大气腐蚀

Abstract：Microstructure and phase constituent of magnesium-aluminum alloys adding different aluminum content (3.4mass%, 9.3mass%, and 20.7mass%)were investigated utilizing the scanning electron microscopy (SEM) equipped with energy-dispersive analysis of x-ray (EDAX) and X-ray diffraction (XRD).The influence of microstructure on the corrosion morphologies was observed after corrosion tests in laboratory simulated atmosphere. The results indicated that magnesium-aluminum alloys with different aluminum content in the atmospheric environment had different corrosion behavior due to amount and distribution of the βphase (Mg17Al12). Mg-3Al alloy was single-phase alloy,while Mg-9Al alloy and Mg-21Al alloy were two-phase alloys. There were more βphase in Mg-21Al alloy than in Mg-9Al alloy because of its higher aluminum content. Mg-3Al alloy exhibited better atmospheric corrosion resistance than Mg-9Al alloy and Mg-21Al alloy. There were fewer corrosion products on the surfaces of Mg-3Al specimens, while severe corrosion was found to take place in both Mg-9Al alloy and Mg-21Al alloy due to the presence of the β phase in them.More specifically , it was discovered that due to the absence of the couple-actuation of βphase ,the corrosion of single -phase alloy Mg-3Al may be attributed solely to the pitting caused by high concentration of Cl- near the NaCl deposits however, with Mg-9Al alloy and Mg-21Al alloy, a more important factor for corrosion is the presence of β phase. under couple-actuation of the negative of β phase, αphase causes a corrosion along the depth extent.

Key words： magnesium alloy aluminum content microstructure atmospheric corrosion

收稿日期: 2006-10-31

ZTFLH:

TG174.3+1

通讯作者: 贾瑞灵 E-mail: jrl014014@163.com

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引用本文:

贾瑞灵; 严川伟; 王福会 . 不同铝添加量对镁合金显微组织及大气腐蚀行为的影响[J]. 中国腐蚀与防护学报, 2007, 27(5): 269-273 .
Chuanwei Yan. Influence of Aluminum Content on Microstructure and Atmospheric Corrosion Behaviorof Magnesium-Aluminum Alloys. J Chin Soc Corr Pro, 2007, 27(5): 269-273 .

链接本文:

https://www.jcscp.org/CN/ 或 https://www.jcscp.org/CN/Y2007/V27/I5/269

[1]Lunder O,Aune T K R,Nisancioglu K.Effect of Mn additions onthe corrosion behaviour of mould-cast magnesium ASTM AZ91[J].Corrosion,1987,43(5):291-295
[2]Lunder O,Lein J E,Aune T K R,et al.The role of the Mg17Al12phase in the corrosion of Mg alloy AZ91[J].Corrosion,1989,45(9):741-748
[3]Beldjoudi T,Fiaud C,Robbiola L.Influence of homogenizationand artificial ageing heat treatments on corrosion behaviour of Mg-Al alloys[J].Corrosion,1993,49(9):738-745
[4]Uzan P,Eliezer D,Aghion E.The effect of theβphase and heattreatment on the corrosion behaviour of magnesium AZ91 alloy[J].Synthesis of Lightweight Metals.,1999,3:171-176
[5]Song G L,Atrens A,Dargusch M.Influence of microstructure onthe corrosion of diecast AZ91D[J].Corros.Sci.,1999,41:249-273
[6]Song G L,Atrens A.Understanding magnesium corrosion[J].Adv.Eng.Mater.,2003,5(12):837-858
[7]Mathieu S,Rapin C,Steinmetz J,et al.A corrosion study of themain constituent phases of AZ91 magnesium alloys[J].Corros.Sci.,2003,45:2741-2755
[8]Ambat R,Aung N N,Zhou W.Evaluation of microstructural ef-fects on corrosion behaviour of AZ91D magnesium alloy[J].Cor-ros.Sci.,2000,42:1433-1455
[9]Wang F P,Li X G,Lin C,et al.Atmospheric corrosion behaviorof AZ91D magnesium alloy in Beijing area[J].J.Chin.Soc.Cor-ros.Prot.,2004,(24)6:345-349(王风平.AZ91D镁合金在北京地区的大气腐蚀行为研究[J].中国腐蚀与防护学报,2004,(24)6:345-349)
[10]Neufeld A K,Cole I S,Bond A M,et al.The initiation mecha-nism of corrosion of zinc by sodium chloride particle deposition[J].Corros.Sci.,2002,44:555-572

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