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논문 기본 정보

자료유형
학술저널
저자정보
Puli Cao (Xiangtan University) Chengbo Li (Xiangtan University) Daibo Zhu (Xiangtan University) Cai Zhao (Xiangtan University) Bo Xiao (Xiangtan University) XinMing Zhang (Central South University)
저널정보
대한금속·재료학회 Metals and Materials International Metals and Materials International Vol.30 No.7
발행연도
2024.7
수록면
1,965 - 1,976 (12page)
DOI
10.1007/s12540-024-01627-7

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초록· 키워드

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Based on the quenching experiments, the precipitation behavior of 7085 aluminum alloy at different quenching rates wasinvestigated through electrical conductivity testing, microstructure characterization, and thermodynamic calculations. Thestudy reveals that as the quenching rate decreases, the electrical conductivity increases, and there is an increase in the typesand nucleation sites of quenching precipitation phases. The preferred nucleation sites for precipitation are in the followingorder: high-angle grain boundaries (HAGBs), low-angle grain boundaries (LAGBs), non-coherent Al3Zrparticles withinrecrystallized grains (RGs), dislocations, and coherent Al3Zrparticles within subgrains (SGs). The precipitation sequenceof quenching phases is as follows: η, T, and Y phases. With the decrease in quenching rate, the η phase is first observedto precipitate at HAGBs, followed by LAGBs, non-coherent Al3Zrparticles within RGs, dislocations, and coherent Al3Zrparticles within SGs. Furthermore, at quenching rates below 152 °C/min, the T phase is observed to precipitate at LAGBs.At a quenching rate of 129 °C/min, the Y phase is observed to precipitate at dislocations.

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