Exfoliation Corrosion Behavior of Cold-Rolled Mg-14 mass% Li-1 mass% Al Alloy in NaCl Solution
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- Morishige Taiki
- Department of Chemistry and Materials Engineering, Kansai University
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- Doi Hirokazu
- Graduate School of Science and Engineering, Kansai University
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- Goto Takayuki
- Santoku Corporation
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- Nakamura Eiji
- Santoku Corporation
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- Takenaka Toshihide
- Graduate School of Science and Engineering, Kansai University
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抄録
Cold-rolled Mg–Li system alloys represent the exfoliation corrosion on the surface of the longitudinal and the transverse sections. In this study, the origination of the exfoliation corrosion of the cold-rolled Mg–Li alloy was clarified. In the initial stage of the corrosion, the oxide film formed immediately on the surface of each section, and then the film destruction with a remarkable bubble generation was observed in a certain spot. There were microcracks on the trace of the film destruction along the grain boundary. The corrosion resistance in the annealed specimen was more than that in the as-rolled specimen because the microstructure of the as-rolled specimen has elongated and thinned grains by severe cold rolling. The exfoliation corrosion was not observed in the annealed specimen, because the annealed specimen has homogeneous equiaxial grains. The successive film destruction in annealed specimen progressed along the grain boundary to random direction. Moreover, the initiation time of the bubble generation was delayed in the annealed specimen.
収録刊行物
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- MATERIALS TRANSACTIONS
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MATERIALS TRANSACTIONS 54 (9), 1863-1866, 2013
公益社団法人 日本金属学会
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詳細情報 詳細情報について
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- CRID
- 1390282679226375552
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- NII論文ID
- 10031194684
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- NII書誌ID
- AA1151294X
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- COI
- 1:CAS:528:DC%2BC3sXhslejt7zE
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- ISSN
- 13475320
- 13459678
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- NDL書誌ID
- 024795666
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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- 使用不可