抄録
A study was made on the effect of hardness on fatigue properties of high strength steels. Rotating bending fatigue tests were carried out on four different carbon steels tempered at four temperatures.
The results are summarized as follows;
(1) Origin and location of fatigue fracture could be classified by hardness. (2) Even for high hardness steel showing fish eye fracture, fatigue limit was proportional to hardness under the same tempering condition. (3) Fatigue limit could be estimated as a function of hardness and tempering temperature.
