Abstract
Martensitic transformation induced by strain in duplex stainless steels is a good option to increase their strength and elongation. The influence of low deformation levels on the phase transformation was studied in a 2304 lean duplex stainless steel. It was demonstrated that this steel exhibited the phase transformation of austenite (γ) into epsilon (ε) and alpha (α′) martensite after cold rolling. The ε and α′ were observed in shear bands and close to the grain boundaries. The Shoji–Nishiyama relation 110γ//2110ε was observed. Hitherto, the ε formation has not been reported in the literature for this steel by cold deformation.
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