engleski

Fracture toughness–Charpy impact test–Rockwell hardness regression based model for 51CrV4 spring steel

Charpy V-notch (CVN) impact-test values are widely used in toughness specifications for spring steels, even though the fracturing energy is not directly related to the spring's design. Both standard and non-standard methods for determining KIc are expensive and time consuming. In this paper, based on the results of experimental studies on spring-steel grade 51CrV4, we have tried to find an expression so as to determine the fracture toughness from a computation based on the test results of the CVN and the HRc. This would be a much more economical and faster way to evaluate the fracture toughness of spring steels.

spring steel; fracture mechanics; fracture toughness; Charpy impact test; statistics

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