Effect of vanadium on fatigue performance of a bainitic forging steel

被引：5
|
作者：
Liu, Bin [1 ]
Hui, Weijun [1 ]
Xie, Zhiqi [1 ]
Zhang, Yongjian [1 ]
Zhao, Xiaoli [1 ]
机构：
[1] Beijing Jiaotong Univ, Mat Sci & Engn Res Ctr, Sch Mech Elect & Control Engn, Beijing 100044, Peoples R China
来源：
INTERNATIONAL JOURNAL OF FATIGUE | 2023年 / 167卷
关键词：
Bainitic forging steel; Vanadium; High-cycle fatigue; Fatigue crack growth; Microstructure; MECHANICAL-PROPERTIES; MICROALLOYED STEEL; TEMPERED STEEL; BEHAVIOR; MICROSTRUCTURE; TRANSFORMATION; AIR; STRENGTH;
D O I：
10.1016/j.ijfatigue.2022.107398
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Two heats of Mn-Cr type bainitic forging steels with different amounts of V (0 and 0.13 wt%) were adopted to investigate their fatigue performance by rotating bar bending fatigue and fatigue crack growth (FCG) testing. The results show that the V addition can significantly increase the fatigue limit by-21% mainly through the pre-cipitation hardening of V(C,N) precipitates and refinement of martensite/austenite (M/A) constituents mecha-nism, However, the FCG rate of V-added steel is slightly higher than that of the V-free steel at most FCG range. Suggestions to further improve the fatigue performance of bainitic forging steel are put forward.
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页数：9
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