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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2018.1
- 수록면
- 1,359 - 1,368 (10page)
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초록· 키워드
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The mechanical properties and microstructure evolution of Mg–8Li–3Al–1Y alloy undergoing different rolling processeswere systematically investigated. X-ray diffraction, optical microscope, scanning electron microscopy, transmission electronmicroscopy as well as electron backscattered diffraction were used for tracking the microstructure evolution. Tensile testingwas employed to characterize the mechanical properties. After hot rolling, the MgLi2Alprecipitated in β-Li matrix due to thetransformation reaction: β-Li → β-Li + MgLi2Al + α-Mg. As for the alloy subjected to annealed hot rolling, β-Li phase wasclearly recrystallized while recrystallization rarely occurred in α-Mg phase. With regard to the microstructure undergoing coldrolling, plenty of dislocations and dislocation walls were easily observed. In addition, the microstructure of alloys subjectedto annealed cold rolling revealed the formation of new fresh α-Mg grains in β-Li phase due to the precipitation reaction. Themechanical properties and fracture modes of Mg–8Li–3Al–1Y alloys can be effectively tuned by different rolling processes.
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