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Recrystallization in type 304L stainless steel during friction stirring
Ist Teil von
Acta materialia, 2005-02, Vol.53 (3), p.637-645
Ort / Verlag
Oxford: Elsevier Ltd
Erscheinungsjahr
2005
Quelle
Elsevier ScienceDirect Journals
Beschreibungen/Notizen
The recrystallization phenomenon during friction stirring (FS) of type 304L stainless steel was examined by orientation imaging microscopy. In the stir zone, a 〈100〉 fiber texture component containing a dominant orientation was observed from the center to the advancing side. Most grains having this dominant 〈100〉 fiber texture component contained a high density of dislocations in the as-processed condition. Post-processed heat treatment (HT) resulted in grain growth, twinning and a change in texture component in most grains having this 〈100〉 fiber component. Grains having a different orientation than the 〈100〉 fiber component, experienced grain growth and twinning without rotation of orientation during HT. From these results, it was deduced that friction stir processed 304L stainless steel partially underwent static recrystallization following dynamic recrystallization during FS.