| 摘要 |
PURPOSE:To make the joint structure of high strength by fitting the insert material consisting of the tantalum in >= the prescribed thickness between the material to be joined of a ferrous material, etc. and the other material to be joined of zirconium and by performing a non-fusion or fusion welding of the space between the material to be joined and insert material. CONSTITUTION:The friction welding of non-fusion is performed in the space 4 between the material 1 to be joined (ferrous material or Ni base alloy) and the insert 3 consisting of a tantalum. The electron beam welding, etc. of non- fusion or fusion welding is performed in the space 5 between the material 2 to be joined (zirconium) and insert 3. In this case the thickness of the insert material 3 is taken >=10mum. The ferrous material means a steel, low alloy steel, high alloy steel, etc. and Zr material a pure Zr and Zr alloy. With this joint structure the combination of high strength is possible and the corrosion resistance of the connection part can be improved.
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