Research on the Fatigue Performance of Stainless Steel Channel
Using S30478 as the raw material,the 30/20 hot-rolled pre-embedded groove was taken as the research object.Through fatigue testing,the appearance,metallographic structure,and scanning electron microscopy analysis of multiple batches of fatigue failure samples were carried out to identify the reasons for the early failure of stainless steel groove fatigue testing.It was found that the riveting method of the groove anchor rod,the surface quality of the groove comer,and the solid solution heat treatment process were the reasons for fatigue cracking.The main reason is the concave or wrinkled surface at the inner comers of the groove.