Tubular test specimens were fabricated by an electric resistance welding process from a rimmed steel with a low strain hardening ratio (1.16). These specimens were tested in tension with the purpose of highlighting the effects on member strength and ductility of successive cycles of straining and aging on the same specimen. The results from the various tests, which had different cyclic patterns, were used to indicate the importance of these effects. The overall effect is that successive straining and strain aging cycles incrementally increase strength and reduce ductility up to a limit. The pattern of the cycles is of secondary importance.
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