On the discontinuous precipitation during recrystallization in a multicomponent alloy. (February 2023)

• Record Type: Journal Article
• Authors: Baler, Nithin; Godha, Akshat; Makineni, Surendra Kumar
• Is Part Of: Scripta materialia. Number 224(2023)
• Publication Date: 2023-02
• Subjects: Discontinuous precipitation -- Grain boundaries -- Precipitates -- Solute segregation -- Electron microscopy -- Atom probe tomography; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2022.115133
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract : Discontinuous precipitation (DP) reactions are among the most important solid-state phenomena that occur during the migration of grain boundaries (GBs) in many engineering alloys. Migration involves solute redistribution across the moving GB and the solute diffusion assumed to occur only along it. In this work, we show the atomic scale compositional analysis across a migrating GB during recrystallization in a multicomponent alloy that reveals evidence of bulk/lattice diffusion in a precipitate free buffer zone ahead of the RF, and solute segregations at local interfaces that aid to determine the rate-limiting solutes for DP reaction kinetics. Graphical abstract: Image, graphical abstract