レーザロール溶接法による低炭素鋼と純チタンの接合
2007 年 25 巻 1 号 p. 173-178
詳細
2007 年 25 巻 1 号 p. 173-178
Recently, the demands of dissimilar metal joint have been increasing in industry, especially in automobile industry. Therefore, research and development of dissimilar metal joining is accelerated. The Laser Roll Welding has been developed by M. Kutsuna and M. Rathod. Joining of dissimilar metals, such as Fe-Al and Fe-Cu has been studied. And titanium has superior corrosion resistance; it is used for the clad plate for splash zone of bridge pier, the sea-water plant, the condenser of a nuclear power plant and so on. It is well known that fusion welding of steel and titanium is difficult due to the brittle intermetallic compound formation. In the present work, the effect of process parameters on the formation of intermetallic compound at the interlayer was investigated to get a sound joint. The mechanical properties and microstructures of welded joint were also studied. The results of tensile shear test showed that the strength of joint increased with the decrease in interlayer thickness. When the interlayer thickness was less than 25 μm, tensile shear test specimens were failed in base metal of low carbon steel.
