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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2018.1
- 수록면
- 1,249 - 1,255 (7page)
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초록· 키워드
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High temperature compression tests for newly developed Al–Zn–Mg alloy were carried out to investigate its hot deformationbehavior and obtain deformation processing maps. In the compression tests, cylindrical specimens were deformed athigh temperatures (300–500 °C) and strain rates of 0.001–1/s. Using the true stress–true strain curves obtained from thecompression tests, processing maps were constructed by evaluating the power dissipation efficiency map and flow instabilitymap. The processing map can be divided into three areas according to the microstructures of the deformed specimens:instability area with flow localization, instability area with mixed grains, and stable area with homogeneous grains resultingfrom continuous dynamic recrystallization (CDRX). The results suggest that the optimal processing conditions for the Al–Zn–Mg alloy are 450 °C and a strain rate of 0.001/s, having a stable area with homogeneous grains resulting from CDRX.
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