Abstract
Temperature dependence of the reverse transformation induced by shot-peening has been investigated for austenitic stainless steel (SUS 304) containing large amount of strain-induced martensite (α’). When the SUS 304 specimen is shot-peened under higher temperature than 100oC, the volume fraction of austenite (γ) on the peened surface is increased. This indicates that the reverse transformation is occurred by the shot-peening. Furthermore, the amount of the γ generated by the reverse transformation is increased as the processing temperature increases. Hence, it is found that the reverse transformation behavior of the SUS 304 steel by the shot-peening depends on the processing temperature.
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