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Al-Zn-Mg-Cu-Zr 합금의 집합조직 발달과 기계적 특성에 미치는 Sc 첨가의 영향
제창웅,진승준,정동석,임성택,이용연,박노진 대한금속재료학회 2004 대한금속·재료학회지 Vol.42 No.10
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)
0.1% Sc이 첨가된 7X1X Al-합금의 압연과 T-6열처리에 따른 집합조직의 발달
제창웅 ( Je Chang Ung ),진승준 ( Jin Seung Jun ),정동석 ( Jeong Dong Seog ),임성택 ( Im Seong Taeg ),박노진 ( Park No Jin ) 한국열처리공학회 2004 熱處理工學會誌 Vol.17 No.2
N/A After extrusion, cold rolling and T-6 treatment, texture development of 7×1× Al<alloy with 0.1% Sc is studied. During extrusion the very strong <111>+weak <100> fiber texture is developed, which is influenced on the formation of rolling texture. The texture after 80% cold rolling can be described by strong {112}<111>(Cu)+{l23}<634>(S) component in the cross section of the extruded rod, the strong -fiber+weak {110}<001>(Goss) Components in the longitudinal section, and the strong {110}412>(Bs)+weak {001}<100>(Cube) components in the transverse section. The components of rolling texture are remained after T-6 treatment, but the maximum density of ODF is higher. The calculated mean r-values and the planar anisotropy are relatively high, which are dependent on the texture. After T-6 treatment, recrystallized equiaxed grains with average grain size of 1-2 ㎛ are qbtained.