Abstract
A study has been conducted to determine the effects of strain aging in tension at elevated temperature (dynamic strain aging) on the room-temperature mechanical properties of impure iron containing up to 0.1% phosphorus. The results show that the increase in yield strength after prestraining at 100°C (dynamic strain aging) is about twice as great as that resulting from prestraining the same amount at room temperature and then aging at 100°C (static strain aging). This greater increase in yield strength is accompanied by only a slight decrease in uniform elongation. The ultimate tensile strength is similar after either strain-aging treatment.
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