A Statistical Model of Cleavage Fracture Toughness of Ferritic Steel DIN 22NiMoCr37 at Different Temperatures
1
State Key Laboratory of Nonlinear Mechanics (LNM), Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China
2
Applied Materials, Inc., 974 East Arques Avenue, Sunnyvale, CA 94085, USA
3
China Institute of Atomic Energy, Beijing 102413, China
4
School of Materials Engineering, Shanghai University of Engineering Science, 333 Long Teng Rd., Shanghai 201620, China
*
Authors to whom correspondence should be addressed.
Materials 2019, 12(6), 982; https://doi.org/10.3390/ma12060982
Received: 19 February 2019
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Revised: 16 March 2019
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Accepted: 18 March 2019
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Published: 25 March 2019
(This article belongs to the Section Advanced Materials Characterization)
It is a conventional practice to adopt Weibull statistics with a modulus of 4 for characterizing the statistical distribution of cleavage fracture toughness of ferritic steels, albeit based on a rather weak physical justification. In this study, a statistical model for cleavage fracture toughness of ferritic steels is proposed according to a new local approach model. The model suggests that there exists a unique correlation of the cumulative failure probability, fracture toughness and yield strength. This correlation is validated by the Euro fracture toughness dataset for 1CT specimens at four different temperatures, which deviates from the Weibull statistical model with a modulus of four.
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MDPI and ACS Style
Qian, G.; Lei, W.-S.; Tong, Z.; Yu, Z. A Statistical Model of Cleavage Fracture Toughness of Ferritic Steel DIN 22NiMoCr37 at Different Temperatures. Materials 2019, 12, 982. https://doi.org/10.3390/ma12060982
AMA Style
Qian G, Lei W-S, Tong Z, Yu Z. A Statistical Model of Cleavage Fracture Toughness of Ferritic Steel DIN 22NiMoCr37 at Different Temperatures. Materials. 2019; 12(6):982. https://doi.org/10.3390/ma12060982
Chicago/Turabian StyleQian, Guian, Wei-Sheng Lei, Zhenfeng Tong, and Zhishui Yu. 2019. "A Statistical Model of Cleavage Fracture Toughness of Ferritic Steel DIN 22NiMoCr37 at Different Temperatures" Materials 12, no. 6: 982. https://doi.org/10.3390/ma12060982
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