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논문 기본 정보

자료유형
학술저널
저자정보
조욱제 (현대머티리얼) 윤태진 (부산대학교) 곽승윤 (부산대학교) 이재형 (부산대학교) 강정윤 (부산대학교)
저널정보
대한용접·접합학회 대한용접·접합학회지 大韓熔接·接合學會誌 第35卷 第2號
발행연도
2017.4
수록면
23 - 29 (7page)

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Mechanical properties and hardness distributions in arc brazed joints of Dual phase steel using Cu-Al insert metal were investigated. The maximum tensile shear load was 10.4kN at the highest brazing current. It was about 54% compared to tensile load of base metal. This joint efficiency is higher than that of joint of DP steel using Cu-based filler metals which are Cu-Si, Cu-Sn. Fracture positions can be divided into two types. Crack initiation commonly occurred at three point junction among upper sheet, lower sheet and the fusion zone. However crack propagations were different with increasing the brazing current. In case of the lower current, it instantaneously propagated along with the interface between fusion zone and upper base material. On the other hand, in case of higher current, a crack propagation occurred through fusion zone. When the brazing current is low (60, 70A), the interface shape is flat type. However the interface shape is rough type, when the brazing current is high (80A). It is thought that the interface shapes were the reason why the crack propagations were different with brazing current. The interface was the intermetallic compounds which consisted of (Fe,Al)<SUB>0.85</SUB>Cu<SUB>0.15</SUB> IMC formed by crystallization at 1200℃during cooling. Therefore the maximum tensile shear load and the fracture behavior were determined by a interface shape and effective sheet thickness of the fracture position.

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Abstract
1. 서론
2. 실험방법
3. 실험결과 및 고찰
4. 결론
References

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