抄録
Nanoindentation tests have been applied to quantitative characterization of interfaces of bonded materials. Distributions of indentation hardness and Young's modulus on the material surface are precisely determined. Two kinds of bonded materials, a diffusion bonding of aluminum alloy and stainless steel and a spot welding of carbon steels, are used for specimens. It has been found that the intermetallic compound layer of 4μm produced at the interface of the diffusion bonding has higher mechanical properties than those of the base materials. Two-dimensional mapping of mechanical properties on the cross section of the spot welding has also successfully been performed.
