The Effect of Ion Nitriding and Carbonitriding on Fretting Fatigue of Steels

The paper deals with the effect of ion nitriding and carbonitriding on fatigue strength of steel parts under the fretting conditions. Instrumented fatigue tests were carried out on surface treated flat bars from EA1N and EA4T steels with different strength. The chosen surfacing decrease importantly an unfavorable fretting effect. Nitridation suppressed the unfavorable effect of fretting almost entirely, while the influence of carbonitridation was less striking. The results were compared with those ones obtained on bars without surfacing. The causes of favorable influence of surfacing are discussed.

Authors:

• V. Linhart
• M.

Keywords:

• Carbonitriding
• fatigue
• fretting
• nitriding
• steel.

References:

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