Cyclic Deformation Characters and Description of the Cast Steel for Chinese Railway Rolling Wagon Bogie Frames

Abstract:

Cyclic deformation characters and description method are investigated to the grade B cast steel for Chinese railway rolling wagon bogie frames. Incremental step test method with 8 strain amplitude loading mode were employed. Results reveal that the material acts as non-Masing behaviour with a significant Bausinger’s effect and appears a slight cyclic softening. Great of dimples in the transient fracture district indicate that present material is ductile. Significant discrepancy between the monotonic and cyclic beaviour was revealed to indicate that there is different monotonic and cyclic deformation behaviour. The scattered cyclic stress-strain relations indicate that appropriate description for the cyclic deformation of present material should be a probabilistic modeling. And then, a probabilistic modeling with measurements of survival probability and confidence is developed to give a good description to the cyclic deformation behaviour.

• Periodical: Advanced Materials Research (Volumes 118-120)
• Pages: 95-99
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.118-120.95
• Online since: June 2010
• Authors: Yong Xiang Zhao, Bing Yang
• Keywords: Bogie Frame, Cast Steel, Cyclic Deformation, Fatigue, Railway, Rolling Wagon

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