Effects of cold rolling on phase precipitation and phase transformation in a 2507 SDSS

In the present work 7 samples of UNS S32750 was cold rolled at different rates, analyzed in this state and also after the ageing for 2400s at 400 and 900°C.\nInvestigation was carry out with: OM SEM ( EBSD EDS) Magnetic tests: Forster, Permeameter, Stablein steinitz, ferrite tester.\nWas found that in this SDSS that no enhancements of magnetic properities took place, therefore, there was not transformation of phase (γ α ') due to cold deformation. After the treatment at 900°C big amount of sigma phase precipitated in all the samples, but this phenomena was more accentued in the most deformed samples than in the others, so, it 's possible to say that the cold deformation improve the quantity of sigma phase that precipitate. Again, it seems that the decomposition process results significantly more secondary austenite than sigma phase but this require further investigation