Aluminium 합금 용접부의 부식피로균열 성장거동에 관한 연구 = A Study on the Corrosion Fatigue Crack Growth Behavior in Weld Zone of Aluminium-Alloy

국문 초록 (Abstract)

본 연구에서는, 항공기와 선박구조물에 많이 사용되고 있는 Al 5052-H38 용접재의 부식피로균열성장거동(Cornosion Fatigue Crack Growth Behavior)을 구명하기 위해 Al 5052-H38 판재를 비구속 TIG 용접한 후 상온 대기중과 3.5% Nacl 용액중에서 피로시험을 각각 수행하고, 모재(Parent Metal)와 용접재(Weld Metal), 열영향부재(HAZ Metal)의 피로균열성장거동에 대한 잔류응력(Residual Sthess)과 환경효과(Environmental Effect)를 비교, 검토하였다.

다국어 초록 (Multilingual Abstract)

The Purpose of the present investigation is to study the corrosion fatigue crack growth behaviors in AL 5052-H38 weldment which mainly used in a airplane and shipbuilding structure.
Fatigue crack growth tests were performed with unrestrained TIG welded AL 5052-H38 weldment materials in room temperature air, and in 3.5% NaCl solution at room temperature.
The effects of residual stress and environment on the fatigue crack growth behavior in parent metal, weld metal and HAZ metal of Al 5052-H38 weldment were compared and investigated.