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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2022.5
- 수록면
- 1,264 - 1,276 (13page)
- DOI
- 10.1007/s12540-021-01030-6
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초록· 키워드
오류제보하기
Effects of Zn addition (0, 0.5, 1.0 and 1.5 wt%) on dynamic recrystallization (DRX) behavior of Al-9.2Mg alloy during highstrain rate rolling (with rolling temperature of 400 °C and strain rate of 8.6 s?1) are carefully investigated. The Zn contentplays a significant role in the enhanced DRX of Al-9.2Mg alloy. The critical strain (εc) and the peak strain (εp) are reducedfrom 0.178 ± 0.002 to 0.102 ± 0.001 and 0.211 ± 0.003 to 0.139 ± 0.002 with the Zn content increasing from 0 to 1.5%,respectively. Almost complete DRX grains are obtained in the Al-9.2Mg-0.5Zn alloy. The DRX volume fraction (FDRX), theaverage DRX grain size (AGS), the volume fraction of high-angle grain boundaries (FHAGBs) and the average grain boundaryangle (θAV) are 91.5%, 5.6 μm, 91.1% and 37.6 º, respectively. The Zn addition can enhance the formation of deformationbands (DBs) and promote the DRX process by providing the nucleation sites for new grains, while the increased dynamicprecipitates inhibit DRX. Continuous dynamic recrystallization (CDRX) is the dominant DRX mechanism, while discontinuousdynamic recrystallization (DDRX) is also existent. Effects of Zn addition on DRX process of the Al?Mg alloys canbe ascribed to the more DBs, the reduced stacking fault energy (SFE) and the dynamic precipitates.
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