Study on Fracture Toughness Prediction of Non Power Law Hardening Material by Using Local Approach

Abstract:

A new method of fracture toughness K_1C prediction of non power law hardening material by using cleavage fracture local approach is proposed in this paper. The fracture toughness of A508-Ⅲ 16MnR at different cleavage fracture probability are predicted by using the method. To most of pressure vessel carbon-manganese steels, cleavage fracture is likely to occur at the load corresponding to 62% cleavage fracture probability. Hence, the fracture toughness corresponding to the load is the most possible fracture toughness of the steels. The values of fracture toughness corresponding to 62% cleavage fracture probability is close to that of testing fracture toughness. The work of this paper expends the application of Beremin cleavage fracture model in predicting fracture toughness.

• Periodical: Advanced Materials Research (Volumes 197-198)
• Pages: 1640-1646
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.197-198.1640
• Online since: February 2011
• Authors: Hu Hui, Yu Peng Cao, Pei Ning Li
• Keywords: Cleavage Fracture, Fracture Toughness, Load, Local Approach

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