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논문 기본 정보

자료유형
학술저널
저자정보
Yu-Jong Roh (Mokpo National University) Hyeokjun Yang (Mokpo National University) Jun Yeong Jeong (Mokpo National University) Hyunkyoo Cho (Mokpo National University) Seong-Hee Lee (Mokpo National University)
저널정보
대한용접·접합학회 대한용접·접합학회지 大韓熔接·接合學會誌 第42卷 第5號
발행연도
2024.10
수록면
550 - 559 (10page)

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초록· 키워드

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A cold roll-bonding (CRB) process was applied to enhance the mechanical properties of AA5052 sheet for small ship. Two and four AA5052 sheets of 1 mm thickness, 40 mm width and 300 mm length were stacked, then roll-bonded to a thickness of 0.5 mm and 1 mm respectively by two-pass rolling after such surface treatment as degreasing and wire brushing. The rolling was performed at ambient temperature without lubricant using a 4-high mill at rolling speed of 6.0m/sec. The as roll-bonded AA5052 sheet was then annealed for 1h at various temperatures from 200 to 500℃. The as roll-bonded AA5052 sheets showed a deformation structure in which the grains are elongated to the rolling direction, however above 300℃ they exhibited the complete recrystallization structure consisting of equiaxed grains, regardless of the stack number. The grain diameter of specimens annealed at high temperatures above 300℃ was smaller in 4-layer stack than in 2-layer stack CRB. Both tensile strength and elongation of the specimens were better in 4-layer stack than in 2-layer stack CRB. The effects of stacking number on microstructure and mechanical properties of AA5052 sheets processed by CRB and subsequent annealing were discussed in detail.

목차

Abstract
1. Introduction
2. Experimental Method
3. Results and Discussion
4. Conclusion
References

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