Paper Title:

Fatigue Behavior of Cast Steel ZG20SiMn under Stain Control Mode

Periodical Advanced Materials Research (Volumes 399 - 401)
Main Theme New Materials, Applications and Processes
Edited by Jianmin Zeng, Yun-Hae Kim and Yanfeng Chen
Pages 2236-2240
DOI 10.4028/www.scientific.net/AMR.399-401.2236
Citation Yuan Yuan Li et al., 2011, Advanced Materials Research, 399-401, 2236
Online since November, 2011
Authors Yuan Yuan Li, Feng Li, Xin Che, Li Jia Chen
Keywords Cast Steel ZG20SiMn, Cyclic Stress Response, Fatigue Fracture, Fatigue Life
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Abstract

Abstract: The fatigue behavior of cast steel ZG20SiMn under strain control mode was investigated, and the influence of imposed total strain amplitude on the cyclic deformation and fracture behavior of the cast steel ZG20SiMn was determined. The experimental results reveal that during fatigue deformation, the cast steel ZG20SiMn may exhibit the cyclic strain hardening and stable cyclic stress response behavior, which mainly depends on the imposed total strain amplitude. The relationship between plastic and elastic strain amplitudes with reversals to failure shows a single linear behavior, and can be well described by the Coffin-Manson and Basquin equations, respectively. At different total strain amplitudes, the fatigue cracks initiate at the free surface of fatigue specimens and propagate for the cast steel ZG20SiMn.