| Influence of microstructure on the corrosion of diecast AZ91D | |
| G. L. Song; A. Atrens; M. Dargusch | |
| 1999 | |
| Source Publication | Corrosion Science
 |
| ISSN | 0010-938X |
| Volume | 41Issue:2Pages:249-273 |
| Abstract | The corrosion of die cast AZ91D was studied and related to its microstructure. For comparison and to more fully understand the behaviour of die cast AZ91D, corrosion studies and microstructural examinations were also carried out using slowly solidified high purity AZ91, Mg-2%Al, Mg-9%Al, low purity magnesium and high purity magnesium. Corrosion was studied in 1N NaCl at pH 11 by (1) observing the corrosion morphology, (2) measuring electrochemical polarisation curves and (3) simultaneously measuring both the hydrogen evolution rate and the magnesium dissolution rate. The skin of die cast AZ91D showed better corrosion resistance than the interior. This is attributed to a combination of(1) a higher volume fraction of the beta phase, (2) a more continuous beta phase distribution around finer alpha grains, and (3) lower porosity in the skin layer than in the interior of the die casting. This study showed that the casting method can influence the corrosion performance by its influence on the alloy microstructure. (C) 1999 Elsevier Science Ltd. All rights reserved. |
| description.department | univ queensland, crc alloy & solidificat technol, dept min minerals & mat engn, brisbane, qld 4072, australia. chinese acad sci, inst corros & protect met, state key lab corros & protect, shenyang 110015, peoples r china.;atrens, a (reprint author), univ queensland, crc alloy & solidificat technol, dept min minerals & mat engn, brisbane, qld 4072, australia;atrens@minmet.uq.oz.au |
| Keyword | Magnesium Alloys Az91d Diecasting Corrosion Microstructure Magnesium Alloys |
| URL | 查看原文 |
| WOS ID | WOS:000078779000003 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/37483 |
| Collection | 中国科学院金属研究所 |
| Recommended Citation GB/T 7714 | G. L. Song,A. Atrens,M. Dargusch. Influence of microstructure on the corrosion of diecast AZ91D[J]. Corrosion Science,1999,41(2):249-273. |
| APA | G. L. Song,A. Atrens,&M. Dargusch.(1999).Influence of microstructure on the corrosion of diecast AZ91D.Corrosion Science,41(2),249-273. |
| MLA | G. L. Song,et al."Influence of microstructure on the corrosion of diecast AZ91D".Corrosion Science 41.2(1999):249-273. |
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