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http://dx.doi.org/10.5228/KSPP.2003.12.4.284

Effects of Nitrogen on Deformation Behavior of Duplex Stainless Steel  

이형직 (포항공대 신소재공학과)
장영원 (포항공대 신소재공학과)
Publication Information
Transactions of Materials Processing / v.12, no.4, 2003 , pp. 284-289 More about this Journal
Abstract
The effects of nitrogen on the deformation behavior of duplex stainless steel have been studied. The variation of strength was correlated with the characteristic microstructures pertaining to nitrogen. Analysis based on Hall-fetch relation confirmed that nitrogen enhances phase-boundary strengthening effect. The evolution of dislocation structure, slip traces and misorientation distribution during deformation were also characterized to elucidate the effect of nitrogen on inelastic deformation mechanism. It has been verified in this study that the higher nitrogen content provides a dual-phase microstructure with smaller strength difference between austenite and ferrite resulting into the earlier transfer of inelastic deformation from austenite to ferrite.
Keywords
Duplex Stainless Steel; Hall-Petch Relation; Phase Boundary Strengthening; Deformation Behavior; Misorientation Distribution;
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