Ageing and Corrosion Studies of Cast Al-8wt%Mg Alloys

G. Swami Naidu; A.V.S.S.K.S. Gupta; N.R.M.R. Bhargava

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Ageing and Corrosion Studies of Cast Al-8wt%Mg Alloys

机译：Al-8wt％Mg铸造合金的时效和腐蚀研究

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The ageing response of Al-8wt%Mg alloys was studied. The solutionized samples were aged at 200℃ temperature and the hardness measurements were taken. The maximum Vickers hardness was found in the sample aged for 16 hours. This was due to the formation of β~1 (the intermediate phase) particles in a big enough quantity. The susceptibility to intergranular corrosion of the aged samples was determined by measuring the mass loss. The nitric acid mass loss test (NAMLT) according to ASTM G 67 indicated that Al-8wt%Mg alloy samples aged at 200℃ were more susceptible to IGC and the susceptibility has been increased with increased time of ageing. This was due to the precipitation of anodic β~1 phase.

机译：研究了Al-8wt％Mg合金的时效响应。固溶后的样品在200℃的温度下老化，并进行硬度测量。在老化16小时的样品中发现最大的维氏硬度。这是由于形成了数量足够大的β〜1（中间相）颗粒。通过测量质量损失来确定老化样品对晶间腐蚀的敏感性。根据ASTM G 67进行的硝酸质量损失测试（NAMLT）表明，在200℃时效的Al-8wt％Mg合金样品对IGC的敏感性更高，并且其敏感性随着时效时间的增加而增加。这是由于阳极β〜1相的析出。

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《International journal of materials science》 |2011年第2期|p.197-201|共5页
作者
G. Swami Naidu; A.V.S.S.K.S. Gupta; N.R.M.R. Bhargava;
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Metallurgical Engineering Department,JNTU, Kakinada, Vizianagaram Campus, India;

Mechanical Engineering Department,JNTU, Hyderabad, India;

Metallurgical Engineering Department and Registrar,Adikavi Nannaya University, Rajahmundry, India;

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Ageing and Corrosion Studies of Cast Al-8wt%Mg Alloys

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