对50CrVA高强弹簧钢超高周疲劳损伤机制的影响*
Ultrahigh Cycle Fatigue Damage Mechanisms of High Strength 50CrVA Spring Steel Regulated by Heat Treatment Process
对50CrVA高强弹簧钢超高周疲劳损伤机制的影响* |
| 周蒙蛟,王弘,汪奔 |
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Ultrahigh Cycle Fatigue Damage Mechanisms of High Strength 50CrVA Spring Steel Regulated by Heat Treatment Process |
| Mengjiao ZHOU,Hong WANG,Ben WANG |
| 图4 不同热处理状态下50CrVA弹簧钢超高周疲劳断口扫描电镜观察 |
| Fig.4 Scanning electron microscope (SEM) micrographs of fracture surface of 50CrVA spring steel tested by ultrahigh cycle fatigue after heating treatment: (a) QT, σ=833 MPa, Nf=5.10×108; (b) QT, σ=833 MPa, Nf=5.10×108; (c) AD, σ=550 MPa, Nf=2.60×108; (d) AD, σ=700 MPa, Nf=1.12×106 |
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