http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
마찰교반 용접에서 공구의 삽입 깊이와 용접 길이가 L5000-0계 알루미늄 판재에 미치는 영향
손태관(TaeKwan Son) 한국자동차공학회 2016 한국자동차공학회 부문종합 학술대회 Vol.2016 No.5
15000-0 aluminum alloy plates with thicknesses of 1.4 and 1.0 ㎜ were friction-stir-lap-welded (FSLWed). The influences of the tool plunge depth and welding distance on surface appearance, macrostructure and mechanical properties of the FSLWed plates were experimentally investigated. The tensile shear load of the FSLWed plates was compared with that of the adhesive-bonded plates. Defect-free FSLWed zones were successfully obtained in all the tool plunge depths and the welding distances. The FSLWed zones exhibited the relatively smooth surface morphologies. Under all the FSLWed conditions, the FSLWed zone exhibited higher average hardness than the base metal. In addition, the upper plate exhibited a higher average hardness than the lower plate, although there was no special tendency in spite of the change in the tool plunge depth and the welding distance. The maximum tensile shear load of the FSLWed plates was much higher than that of the adhesive-bonded aluminum alloy plate. Especially, under the FSLW condition of the plunge depth of 1.8 ㎜ and the welding distance of 40 ㎜, the tensile shear load of the FSLWed plate reached a level about 41% greater than that of the adhesive-bonded aluminum alloy plate. In addition, the maximum tensile shear load of the FSLWed plate was increased with the increase of the welding distance.