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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2015.1
- 수록면
- 104 - 108 (5page)
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The effect of ultrasound, chilled radiating face and dissolved Ti on the grain refinement of 7085 Al alloyswas investigated in this paper. It was found that small equiaxed grains occurred below the chilled radiatingface, and the coarse dendrites formed below the preheated radiating face. However, the dissolved Ti from theeroding radiator cannot generate grain refinement under ultrasonic vibration, which is different from the previouslyreported result that Ti is a powerful grain refiner. Significant grain refinement can be induced when the ultrasoundwas introduced through a preheated radiator between 650 °C and 620 °C. The grain refinement, involvedin the 7085 Al alloys under ultrasonic vibration, is mainly attributed to the heterogeneous nucleation and acousticstreaming.
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