The Deformation and Ageing of Mild Steel: III Discussion of Results

Published under licence by IOP Publishing Ltd
, , Citation E O Hall 1951 Proc. Phys. Soc. B 64 747 DOI 10.1088/0370-1301/64/9/303

0370-1301/64/9/747

Abstract

An attempt is made here to explain the observed phenomena in the yielding and ageing of mild steel, described in two previous papers, in the general terms of a grain-boundary theory. On this hypothesis, a satisfactory explanation of the variation of the lower yield point with grain size may be developed. It is shown that strain-ageing must involve two processes: a healing of the grain-boundary films, coupled with a hardening in the grains themselves. A discussion of the possible nature of the grain-boundary film is also undertaken.

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