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A new local approach to cleavage fracture and its application in a reactor pressure vessel
Qian GA(钱桂安); Lei WS; Zhu SP; Correia J; De Jesus A
Conference Name22nd European Conference on Fracture (ECF) - Loading and Environmental Effects on Structural Integrity
Conference DateAUG 26-31, 2018
Conference PlaceBelgrade, SERBIA
AbstractThe paper presents and applies a local approach to correlate the fracture behavior of a notched and fracture mechanics specimen. The random nature of cleavage fracture process determines that both the microscopic fracture stress and the macroscopic properties including fracture load, fracture toughness and the ductile to brittle transition temperature are all stochastic parameters. This understanding leads to the proposal of statistical assessment of cleavage induced notch toughness of ferritic steels according to a new local approach to cleavage fracture. The temperature independence of the two Weibull parameters in the new model induces a master curve to correlate the fracture load at different temperatures. This proposed index is applied to compare the notch toughness of a ferritic steel with two different microstructures. (C) 2018 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the ECF22 organizers.
KeywordFerritic steels cleavage fracture notch brittleness statistical model
WOS IDWOS:000459860900355
Indexed ByCPCI-S
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Document Type会议论文
Affiliation1.{Qian, Guian} Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech LNM, Beijing 100190, Peoples R China
2.{Lei, Wei-Sheng} Appl Mat Inc, 974 East Argues Ave, Sunnyvale, CA 94085 USA
3.{Zhu, Shunpeng} Univ Elect Sci & Technol China, Sch Mech & Elect Engn, Chengdu 611731, Sichuan, Peoples R China
4.{Zhu, Shunpeng} Politecn Milan, Dept Mech Engn, I-20156 Milan, Italy
5.{Correia, Jose、De Jesus, Abilio} Univ Porto, INEGI, Fac Engn, P-4200465 Porto, Portugal
Recommended Citation
GB/T 7714
Qian GA,Lei WS,Zhu SP,et al. A new local approach to cleavage fracture and its application in a reactor pressure vessel[C]ECF22 - LOADING AND ENVIRONMENTAL EFFECTS ON STRUCTURAL INTEGRITY,2018:2174-2179.
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