Theoretical analysis reveals grain-boundary healing and interior grain hardening during strain-ageing in mild steel, suggesting boundary films govern mechanical yielding behavior.
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.
No takes yet. Share an insight, caveat, or question.
E.O. Hall (1951) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: