9Cr13Ni6Co5Be超硬不锈钢的接触疲劳行为研究

Study on Contact Fatigue Behavion of 9Cr13Ni6Co5Be Steel

采用推力式接触方式研究了9Cr13Ni6Co5Be钢的接触疲劳性能,获得了不同破坏概率下接触应力与疲劳寿命的关系式,得到了P-S-N曲线。当破坏概率P=0.01,0.05,0.10和0.50时,不同接触应力下的疲劳寿命表达式分别为N=3.0930×1042×S-9.9602、N=2.9196×1039×S-9.0090、N=1.6505×1038×S-8.6133和N=1.0679×1035×S-7.5988,指定疲劳寿命为5×107的疲劳极限分别为S=3112 MPa,3358 MPa,3493 MPa和3950 MPa。

Abstract： Using thrust stressed device, the contact fatigue behavior of 9Crl3Ni6CoSBe steel has been studied. The relationship be- tween the contact stress and fatigue life under different failure probabilities has been secured, and the P-S-N curves are provided. As failure probabilities are equal to 0. 01, 0. 05, 0. 10 and 0.50, the relationship between the contact stress and fatigue life are N=3.0930×10^42×S^-9.9602、N=2.9196×10^39×S^-9.0090、N=1.6505×10^38×S^-8.6133 and N=1.0679×10^35×S^-7.5988 respectively, the contact fatigue limits（specified fatigue life 5 10^7） are 3112 MPa, 3358 MPa, 3493 MPa and 3950 MPa, respectively.