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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2022.12
- 수록면
- 2,898 - 2,906 (9page)
- DOI
- 10.1007/s12540-022-01187-8
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초록· 키워드
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The microstructures and mechanical properties of Al-2.8 wt%Cu-1.4 wt%Li-T87 alloy after thermal exposure at 125, 150and 175 °C were measured and characterized by universal testing machine, scanning electron microscope and transmissionelectron microscope. The thermal stability of microstructures and mechanical properties of T87 heat-treated Al-2.8 wt%Cu-1.4 wt%Li alloy was investigated. The results show that the tensile strength of Al-2.8 wt%Cu-1.4 wt%Li-T87 alloy increasedfirst and then decreased with the increase of thermal exposure temperature, which is due to the change of the number and sizeof precipitates. After thermal exposure at 125 °C, the alloy exhibited higher strength due to further precipitation of θ′ phaseand stable size of T1phase. After thermal exposure at 175 °C, the mechanical properties of Al-2.8 wt%Cu-1.4 wt%Li-T87alloy decreased obviously, which was related to the dissolution of θ' phase and thickening of T1phase.
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