2015 年 60 巻 1 号 p. 60-67
The purpose of this study is to examine the fretting behavior of the contacting surfaces between dissimilar metal. In this paper, an aluminum alloy (A2017) and a bearing steel (SUJ2) are employed as dissimilar metal. In fretting tests which are carried out in dry or oil-lubricated condition, relative slip amplitude and relative humidity in air are varied. From the results, it is found that the wear volume of A2017 is almost equal to that of SUJ2 in small amplitude in dry condition and that wear volume of A2017 are larger than that of SUJ2 as amplitude increase. In oil-lubricated condition, however, wear is caused only on A2017, and SUJ2 is hardly worn irrespective of relative slip amplitude. It is also found that wear particles influence the fretting behavior. The wear volume of A2017 in high relative humidity levels is smaller than that in low relative humidity levels. The wear volume of SUJ2 is independent of relative humidity.
