Study on fatigue wear competition mechanism and microstructure evolution on the surface of a bainitic steel rail

被引：19

作者：

Zhang, Ruijie ^{[1
]}

Zheng, Chunlei ^{[2
]}

Chen, Chen ^{[1
]}

Lv, Bo ^{[3
]}

Gao, Guhui ^{[4
]}

Yang, Zhinan ^{[1
]}

Yang, Yongqiang ^{[5
]}

Zhang, Fucheng ^{[1
]}

机构：

[1] Yanshan Univ, State Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066000, Hebei, Peoples R China

[2] Yanshan Univ, Coll Mat Sci & Engn, Qinhuangdao 066004, Hebei, Peoples R China

[3] Yanshan Univ, Sch Environm & Chem Engn, Qinhuangdao 066000, Hebei, Peoples R China

[4] Beijing Jiaotong Univ, Mat Sci & Engn Res Ctr, Sch Mech Elect & Control Engn, Beijing 100044, Peoples R China

[5] Juli Sling Co Ltd Baoding, Sling Engn Res Ctr Hebei, Baoding 072550, Hebei, Peoples R China

来源：

WEAR | 2021年 / 482卷

基金：

中国国家自然科学基金; 国家重点研发计划;

关键词：

Bainitic steel; Composition segregation; Rolling contact fatigue; Wear; Fatigue crack; ROLLING-CONTACT FATIGUE; BEHAVIOR; WHEEL; DAMAGE; DEFORMATION; PERFORMANCE; SPEED;

D O I：

10.1016/j.wear.2021.203978

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The wear and fatigue competition mechanism of a bainitic rail steel was studied through rolling contact fatigue test. Results showed that the damage process could be divided into initial (before 2.0 x 105 cycles), middle (around 2.0 x 105 cycles) and late (after 2.0 x 105 cycles) stages, with the dominant damage mechanisms of wear, wear and fatigue, and fatigue in each respectively. With increasing rolling cycles, the retained austenite transformation played an important role in achieving dynamic equilibrium between wear and fatigue. Moreover, the untransformed retained austenite could release crack tip stress and effectively control the excessive propagation of fatigue cracks.

引用

页数：8

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