title: Microstructural Evolution in 2101 Lean Duplex Stainless Steel During Low- and Intermediate-Temperature Aging.
abstract: The microstructural evolution of a 2101 lean duplex stainless steel (DSS) during isothermal aging from room temperature to 470 °C was investigated using thermoelectric power (TEP) measurements to follow the kinetics, atom probe tomography, and transmission electron microscopy. Despite the low Ni, Cr, and Mo contents, the lean DSS was sensitive to α-α' phase separation and Ni-Mn-Si-Al-Cu clustering at intermediate temperatures. The time-temperature pairs characteristic of the early stages of ferrite decomposition were determined from the TEP kinetics. Considering their composition and locations, the clusters are most likely G phase precursors.
authors.affiliation: 1Université de Lyon,INSA de Lyon,MATEIS,UMR CNRS 5510,69621 Villeurbanne Cedex,France.
authors.forename: Jean-Yves
authors.initials: JY
authors.lastname: Maetz
authors.affiliation: 1Université de Lyon,INSA de Lyon,MATEIS,UMR CNRS 5510,69621 Villeurbanne Cedex,France.
authors.forename: Sophie
authors.initials: S
authors.lastname: Cazottes
authors.affiliation: 1Université de Lyon,INSA de Lyon,MATEIS,UMR CNRS 5510,69621 Villeurbanne Cedex,France.
authors.forename: Catherine
authors.initials: C
authors.lastname: Verdu
authors.affiliation: 2Groupe de Physique des Matériaux,Université et INSA de Rouen-UMR CNRS 6634-Normandie Université,76801 Saint Étienne du Rouvray Cedex,France.
authors.forename: Frédéric
authors.initials: F
authors.lastname: Danoix
authors.affiliation: 1Université de Lyon,INSA de Lyon,MATEIS,UMR CNRS 5510,69621 Villeurbanne Cedex,France.
authors.forename: Xavier
authors.initials: X
authors.lastname: Kléber
keywords: atom probe tomography; clustering; duplex stainless steel; ferrite decomposition; thermoelectric power