430 拡散接合部の引張破面形状とフラクタル次元の関係(OS 溶接・接合)

概要

論文の詳細を見る
Diffusion-bonded stainless steel joint apts to fracture brittlely in spite of its enough tensile strength comparable to the base metal. In order to clarify the causes, fractal analysis of the tensile fractured surface was applied under various bonding conditions. As changing the bonding conditions, the shape and distribution of faults such as voids and inclusions left on the bonding surfaces were varied as well as the shape of grain boundaries. These caused the change in fractal dimension variously. Because the fractured surface looked like brittle in macroscopic and ductile in microscopic, the fractal dimension was affected by its observing scale. It was verified that the microstructure of fractured surface was well characterized by its fractal dimension, and that fractal analysis was helpful in solving the problem of diffusion bonding.
一般社団法人日本機械学会の論文
2000-11-24