Experimental Study on Fatigue Behavior of 35CrMo Steel after Torsional Prestrain

Abstract:

Low cycle and high cycle fatigue tests of 35CrMo steel at different pretorsional angles were conducted and cyclic hardening and softening curves, hysteresis loops and S-N curves were obtained of 35CrMo steel after the torsional prestrain. Scanning electron microscopy (SEM) analysis was also made of the fatigue fracture. The results show that: 35CrMo steel features obvious cyclic softening with basically the same law and degree at different torsional prestrains. The area surrounded by the stress-strain hysteresis loop decreases with the increment of the pretorsional angle; the torsional prestain reduces the fatigue life of the materials.

• Periodical: Advanced Materials Research (Volumes 690-693)
• Pages: 1718-1722
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.690-693.1718
• Online since: May 2013
• Authors: Shi Yue Wang, Zhi Yu Wu, Xi Jie Yang, Zhao Ying Ren
• Keywords: 35CrMo Steel, Fatigue Fracture, Fatigue Life, Torsional Prestrain

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