Influence of prestrain and strain aging on cleavage fracture in C–Mn steel

Authors: Sandström, R.; Engberg, G.; Bergström, Y.

Source: Metal Science, Volume 15, Number 9, September 1981 , pp. 409-412(4)

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Abstract:

The influence of prestrain and static strain aging on the cleavage fracture stress ?_f in a C–Mn steel has been investigated. It is shown that ?_f increases with increasing amount of prestrain and that the effect of strain aging is to reduce slightly the value of ?_f. Smith's original theory for cleavage fracture in steel containing grain-boundary carbides is used to determine the effect of prestrain and strain aging on the effective surface energy ?_eff of crack propagation. It is shown that ?_eff is approximately prestrain independent and that strain aging makes ?_eff decrease slightly.

Document Type: Research Article

DOI: http://dx.doi.org/10.1179/030634581790426859

Publication date: 1981-09-01

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