Abstract
Several models of fracture in ferritic steel consider matrix strain to be an indicator of the condition required for second-phase particle cracking (i.e. microcrack nucleation). Recent simulations predict that stress × strain (W) is a better supported indicator. This paper examines the effect of replacing strain by W within the EOH fracture model. There is no improvement in the descriptions of fracture toughness and initiation site properties for eight different steels over a range of temperatures. The use of W, however, leads to the convergence of data from different steels, and permits estimates of the particle cracking criterion to be made from metallographic data, when suitable fractographic data are unavailable. Overall, experiment agrees with simulation in finding W a more appropriate parameter to use than strain alone.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Fatigue & Fracture of Engineering Materials & Structures
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
