Abstract
Experimental investigations were undertaken to find temperature history effects on strain‐induced austenite transformation in metastable 304 stainless steel. Interrupted static tension tests were performed at temperatures 0 and — 15°C. During the first stage of deformation specimens were deformed at temperature T1. During the second stage temperature T2 was applied. Cases T1 > T2 and T1 < T2 were examined. Final amounts of α’ martensite XM were measured magnetically.A method for their summation of martensite amounts was sought for and a conclusion was obtained showing that the final amount of martensite can be calculated by the relationship XM= f(ε)|T2 where ε = εT1, + εT2 ±Δε. The corrective strain Δε depends on εT1. Its connection with true stress – true plastic strain curve at temperature T1 is discussed in this investigation.
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