파이버 레이저를 이용한 알루미늄 합금과 고강도강판의 이종용접에 관한 연구 A Study of Dissimilar Welding for Aluminum alloy and AHSS by Fiber Laser Welding Process
pp.1659-1664
Nowadays, the automotive industry has target to improve the fuel consumption due to restricted exhaust gas regulation. For this reason, the applicability of lightweight material, Al alloys, Mg alloys are also being expanded. In this concept, high strength steel, DP780 and light alloy, AL5052 are joined in the right place of the car body. However, it is difficult to join to steel and aluminum by conventional fusion welding. Generally, in respect to dissimilar metal joining by fusion welding, intermetallic compound layer formed at joint interface; hot cracking in generated. To evaluate the welding quality, tensile test and metallographic examination was carried. Especially, correlation between Heat per unit length and formation of intermetallic compound layer was minutely analyzed. Finally, optimal welding condition was selected for improvement of strength at weldment and practical use.
1. 서론
2. 용접실험 및 결과
2.1 실험 준비
2.2 용접 실험
2.3 실험 결과
3. 결론
4. 참고 문헌