Annealing of austenite formed by reversion from martensite in an Fe–16Cr–12Ni alloy

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Abstract
An investigation has been made of the annealing behaviour of austenite produced by the reversion of partially martensitic structures in an Fe–16wt-%Cr-12wt-%Ni alloy. Martensite formed by a refrigeration treatment was rapidly heated toform ‘reversed’ austenite of high defect density and enhanced strength. The softening that occurred on annealing this reversed austenite in the range 700°–925°C involved mainly recovery rather than recrystallization. Reversed austenite which had formed from martensite induced by cold working above Ms recrystallized on annealing and softened rapidly. The As and Ar temperatures were essentially identical for reversion of martensite produced by either refrigeration or cold working.