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Vol.41, No.10, 669 ~ 677, 2003
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| Title |
| Effect of Chromium on Microstructure and Texture in Hot-Dipped Al-Cr Steel Sheet |
| 임병문 Im Byeong Mun , 홍승현 Hong Seung Hyeon , 정재인 Jeong Jae In , 최장현 Choe Jang Hyeon , 정원섭 Jeong Won Seob |
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| Abstract |
| Microstructure and texture changes of aluminized coatings on steel sheets having Cr ranging from 0.0% to 1.0% in the coated layer were investigated. The surface morphology of the Al-Cr coated steel is not influenced by the increase of Cr contents in the coated layer. While the coated layer of aluminized steel consisted of two phases of Al and Al_(5)Fe₂, the aluminized coating layer containing Cr was composed of three phases of Al, Al_(13)Cr₂, and Al_(13)Fe₄+Al_(5)Fe₂. The surface layer was Al, the middle layer was Al_(13)Cr₂, and the interfacial layer between the coating and the steel substrate was Al_(13)Fe₄and Al_(5)Fe₂. The texture of the aluminized coating without Cr was characterized as a {001} fiber texture which major orientation was {001}<110>. As the Cr content in the aluminized layer was increased to 1.0%, the texture of the aluminized coating was not changed but the intensity of the {001} fiber texture was increased. The major orientation in the {001} fiber texture was changed from the rotated cube orientation of the aluminized coating with 0.1%Cr to the cube orientation of the aluminized coating with 1.0%Cr. |
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| Key Words |
| Hot-Dip aluminized steel sheet, Hot-Dip Al-Cr steel sheet, Texture |
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