WIT Press


Effect Of History On Hydrogen Assisted Cracking

Price

Free (open access)

Paper DOI

10.2495/LD960611

Volume

13

Pages

8

Published

1996

Size

751 kb

Author(s)

J. Toribio & V. Kharin

Abstract

In hydrogen assisted cracking, hydrogenation and crack growth are coupled processes. Consequently, particular histories of stress intensity factor K and crack size evolutions influence crack growth rate v that can occur at the same instantaneous K in a given material. Thus, curve v = v(K) in general does not possess uniqueness as a intrinsic material's property. This paper provides an analytical treatment of the problem by stress-strain assisted diffusion. 1 Introduction The uniqueness of the crack growth kinetics (CGK) curve v(K) of a given material-environment system is an open question, as shown in many experimental observations [1], which brings doubts on the fracture mechanics approach to environmentally assisted cracking (EAC), even under small scale yielding (SSY). The special case of

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