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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2021.12
- 수록면
- 5,145 - 5,153 (9page)
- DOI
- 10.1007/s12540-020-00844-0
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초록· 키워드
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In the present scenario, it is much needed of developing Al?Sc and Al?Sc?Zr alloys owing to its higher strength to weightfor aerospace applications. The present study is dealt about effect of Scandium on micro hardness and micro structure ofsynthesized Al?Sc alloy and Al?Sc?Zr alloy under different weight percentage. The precipitation strengthening of as-caststructure, Al?Sc alloy and Al?Sc?Zr alloy have been analyzed during aging at 350 °C. From the experimental investigation,only little difference in micro hardness of developed alloys was observed during initial stage of aging. The peak hardnessof Al?Sc?Zr alloy was maintained for a relatively longer period for producing better thermal stability. Three-dimensionalatomic probing indicated that the precipitation of Zr in the precipitate at the initial stage of aging which can inhibit thegrowth of the precipitate’s size. TEM results showed that the Al?Sc?Zr alloy formed two precipitates of different sizes atthe over-aging phase after the peak state of hardness.
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