인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
개인구독
소속 기관이 없으신 경우, 개인 정기구독을 하시면 저렴하게
논문을 무제한 열람 이용할 수 있어요.
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
Laser directed energy deposition (L-DED) has the advantages of complex shape production and easy stacking of dissimilar materials, but the reduction in residual stress owing to the rapid temperature change and difference in the thermal expansion behavior between materials should be considered. In this study, the residual stress characteristics according to the tool path in dissimilar materials of a Ti-6Al-4V plate and vanadium were compared and evaluated using finite element analysis. A vanadium layer was stacked on a Ti-6Al-4V plate using the L-DED method, and the simulation reliability was confirmed by comparing the temperatures under the same conditions. To compare the effect of the tool path on the residual stress, the zigzag path, spiral in-to-out (spiral IO), and spiral out-to-in (spiral OI) were simulated. Every path showed high residual stress in the outer area, and spiral IO had a low residual stress level and was uniform throughout the entire area. Therefore, the tool path when the outer area is stacked later similar to the spiral IO, was confirmed to be better for delamination and residual stress reduction. In the case of the zigzag path, the residual stress could be reduced on the final path, and the build-up speed was faster, but a high residual stress was generated on the starting path.
본문·목차
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.