HIGHLIGHTS
- What: In this paper, the fatigue behaviors of three specimens with three different strength levels were investigated through ultrasonic loading frequency (f=20 kHz) and conventional loading frequency (f=52.5 Hz), whose fractography and fatigue strength were obtained and mutually compared. The material adopted in this study is a high-carbon chromium-bearing steel (GCr15), whose chemical composition is shown in Table 1. The experiment was performed on an MTS 810 testing machine (MTS Systems Corporation, were used for the evaluation of the mechanical properties of the three groups of materials.
- Who: Yingxin Zhao . . .

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