Effects of strength level and loading frequency on very-high-cycle fatigue behavior for a bearing steel |
| |
| Affiliation: | 1. College of Materials Science and Engineering, Qingdao University of Science & Technology, Qingdao 266044, China;2. Laboratory for Excellence in Advanced Steel Research, Department of Metallurgical, Materials and Biomedical Engineering, University of Texas, El Paso 500W, University Avenue, El Paso, TX 79968-0520, USA;3. School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China;4. School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin 541004, China;1. Research Laboratory, IHI Corporation, 1, Shin-Nakahara-Cho, Isogo-Ku, Yokohama 235-8501, Japan;2. Kyushu University, 774 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan;1. School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China;2. State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031, China;3. College of Science and Engineering, Ritsumeikan University, Kusatsu 5258577, Japan |
| |
| Abstract: | Rotating bending (52.5 Hz) and ultrasonic (20 kHz) fatigue tests were performed on the specimens of a bearing steel, which were quenched and tempered at 150 °C, 300 °C, 450 °C and 600 °C, respectively, to investigate the influence of strength level and loading frequency on the fatigue behavior in very-high-cycle regime. Influences on fatigue resistance of materials, characteristics of S–N curves and transition of crack initiation site were discussed. The specimens with higher strength showed interior fracture mode in very-high-cycle regime and with slight frequency effect, otherwise cracks all initiate from the surface and the fatigue strength was much higher under ultrasonic cycling. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
