Rotating Bending Fatigue Property of SCM435 during Electrochemical Hydrogen Charging

被引：2

作者：

Kawakami, Ryo ^{[1
]}

Kubota, Kazumasa ^{[1
]}

Matsunaga, Hisao ^{[2
]}

机构：

[1] Aichi Steel Corp, Tokai, Ibaraki 4768666, Japan

[2] Kyushu Univ, Fac Engn, Dept Mech Engn, Fukuoka 8190395, Japan

来源：

JOURNAL OF THE JAPAN INSTITUTE OF METALS AND MATERIALS | 2020年 / 84卷 / 03期

关键词：

rotating bending; fatigue; electrochemical hydrogen charging; SCM435; hydrogen embrittlement; CR-MO; STEELS; CARBON;

D O I：

10.2320/jinstmet.JB201901

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The method of rotating bending fatigue test under an electrochemical hydrogen-charging was established, by which the fatigue tests were carried out for a JIS SCM435 to study the effect of hydrogen on fatigue strength. The fatigue life of the specimen was degraded by hydrogen-charging in relatively low fatigue life regime, where the slope of S-N curve for the hydrogen-charged specimens was equivalent to that for no-charged specimens. The fatigue strength on 50% failure probability at 10(7) cycles under the hydrogen-charging was slightly lower than that under the hydrogen-free condition. On the surface of the non-charged specimen that was run-out at 10(7) cycles, a number of cracks up to approximate to 100 mu m in length was observed. By contrast. in the hydrogen-charged specimen, no crack was observed after the fatigue testing. These results suggested that the hydrogen-charging had a negative influence on the fatigue limit as well as fatigue life of the alloy used in this study.

引用

页码：92 / 98

页数：7

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