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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2020.1
- 수록면
- 1,247 - 1,261 (15page)
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초록· 키워드
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An AA6082 alloy deformed by equal channel angular pressing (ECAP) was studied. Microstructural evolution of the alloyprocessed by ECAP with different passes were evaluated by using optical microscope, scanning electron microscopy coupledwith an electron backscattered diffraction (EBSD) detector and X-ray diffraction. Texture analysis showed the apparitionof two types of textures, one associated with shearing deformation and the second due to the recrystallization phenomena. Mechanical strength properties measured by tensile tests increased in the first ECAP pass, and then progressively diminisheddue to the presence of concurrent softening phenomena. Calorimetric analysis indicated a slightly increase in the recrystallizationtemperature of the deformed specimens. Also, the stored energy increased with increasing ECAP passes due to theproduction of new dislocations. The average geometrically necessary dislocation density, measured by EBSD, increased withincreasing ECAP passes. However, the rate of increase slows down with the progress of ECAP passes.
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