Vibratory-erosion tests on a typical ductile material, 304 stainless steel, were carried out under a specified condition of uniform sitation-nuclei-size distribution. We systematically investigated the behavior of the fracture mode on a smooth surface one figure smaller in roughness than the ASTM recommended value, as well as small roughness effects in the development and/or propagation of cracks and particle fall-off, in the second stage of the incubation period, by means of a scanning electron microscope. It is clear that the mode is fatigue and ductile fracture, and also that small roughness plays an important role in development and/or propagation of the cracks and also in microscopic removals, which shorten the incubation period.
|ジャーナル||Transactions of the Japan Society of Mechanical Engineers Series B|
|出版物ステータス||Published - 1990 1 1|
ASJC Scopus subject areas
- Condensed Matter Physics
- Mechanical Engineering