이종재 Al5083-O/DP590 마찰교반점용접시 툴의 삽입깊이(Plunge Depth)가 용접성에 미치는 영향

• Published in: Journal of welding and joining Vol. 34; no. 3; pp. 17 - 22
• Main Authors: 정수옥(Su-Ok Jeong), 방한서(Han-Sur Bang), 방희선(Hee-Seon Bang)
• Format: Journal Article
• Language: Korean
• Published: 대한용접·접합학회 2016
• Subjects: Dissimilar materials; Friction spot joining(FSJ); Intermetallic compound(IMC); Plunge depth; Intermetallic compound (IMC)
• ISSN: 2466-2232; 2466-2100

In terms of mechanical and metallurgical characteristics, the effect of tool plunge depths(0.2, 0.5, 0.7, 1.0, 1.5mm) on weldability in dissimilar Al5083-O/DP590 friction spot joint has been clarified. From the results, it is found that the stirred nugget was stably formed at a plunge depth of more than 0.7mm, which is caused by improved stirring action against each other material. With increasing a plunge depth, the thickness of intermetallic compound(IMC) layer in Al5083-O/DP590 joint has a tendency to increase. The tensile shear strength reaches to the maximum failure load of 6.5kN at a plunge depth of 0.7mm due to relatively small decrease in the thickness of Al5083-O sheet and relatively minute thickness of IMC layer, compared with those of other plunge depth conditions.