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Vol.42, No.10, 797 ~ 804, 2004
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| Title |
| The Influence of Sc Addition on the Texture Development and Mechanical Properties in Al-Zn-Mg-Cu-Zr Alloy |
| 제창웅 Chang Woong Jea , 진승준 Seung Jun Jin , 정동석 Dong Seok Chung , 임성택 Seong Taek Lim , 이용연 Yong Yun Lee , 박노진 No Jin Park |
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| Abstract |
| The texture and mechanical properties during fabrication processes - extrusion, cold rolling and aging treatment - of plate in the 7050 Al alloys without/with 0.1%Sc were investigated. In both the cross section(CS) and longitudinal section(LS) of the specimen without Sc, after cold rolling, texture of R-fiber was predominant. In the Sc added alloy after cold rolling, {112}<111>(Cu)＋weak (123)<634>(S) texture components developed in the CS of the specimen while strong (3-fiber＋(110)<001>(Goss) components developed in the LS of the specimen. After solution treatment and aging treatment, the alloy (CS and LS) without Sc had random texture, but by the alloys with the 0.1%Sc, the components of the rolling texture are not changed. After the aging treatment, hardness and tensile strength of the alloy with 0.1%Sc increased about 15% and 17%, respectively, than those without Sc. Tensile strength of the Sc added specimen was the highest along the rolling direction where the <111> texture was strongly developed. On the other hand, in the specimen without Sc, the mechanical properties were not dependent on the direction of the sample. (Received May 3, 2004) |
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| Key Words |
| Texture, Sc added alloy, 7050 Al alloy, Recrystallization |
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