Fatigue properties of non-press-fitted part of full-scale induction-hardened axles of medium-carbon steel for high-speed railway vehicles

被引：0

作者：

Makino, T. ^{[1
]}

Kozuka, C. ^{[2
]}

Hata, T. ^{[3
]}

Kato, T. ^{[1
]}

Yamamoto, M. ^{[4
]}

Minoshima, K. ^{[5
]}

机构：

[1] Nippon Steel Corp Ltd, Res & Dev, 1-8 Fuso Cho, Amagasaki, Hyogo 6600891, Japan

[2] Nippon Steel Corp Ltd, Kansai Steel Works, 5-1-109 Shimaya, Konohana, Osaka, Osaka 5540024, Japan

[3] Nippon Steel Corp Ltd, 5-1-109 Shimaya, Konohana, Osaka, Osaka 5540024, Japan

[4] Osaka Univ, Grad Sch Engn, 2-1 Yamadaoka, Suita, Osaka 5650871, Japan

[5] Anan Coll, Natl Inst Technol, 265 Aoki,Minobayashi, Anan, Tokushima 7740017, Japan

来源：

INTERNATIONAL JOURNAL OF FATIGUE | 2025年 / 190卷

关键词：

Railway axle; Medium-carbon steel; Induction hardening; S - N curve; Very-high-cycle fatigue limit; STRENGTH;

D O I：

10.1016/j.ijfatigue.2024.108664

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

This study aimed to examine the stress-number of cycles (S-N) curve and fatigue limit of non-press-fitted parts to improve the sophistication of the design method of induction-hardened axles for medium-carbon steel high-speed railway cars. Macroscopic cracks were generated in the non-press-fitted parts of the axles by selecting appropriate fatigue test methods. Thus, the S-N curve was approximated, and the fatigue limit was obtained. The value of an index in the power-law expression of the S-N curve was 11, which was proposed to fatigue damage evaluation standard. Moreover, we constructed a prediction model for high-and very-high-cycle fatigue limits based on the local fatigue-limit approach and fatigue test results of cut-out specimens from several depth regions of induction-hardened axles. The fatigue limit predicted by the model agrees with the experimental high-cycle fatigue limit. The model estimated that the fatigue limit did not decrease in the very-high-cycle regime.

引用

页数：15