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Type: Artigo
Title: Microstructural Evolution During Friction Stir Welding Of Mild Steel And Ni-based Alloy 625
Author: Fernandez
Johnnatan Rodriguez; Ramirez
Antonio J.
Abstract: Microstructure evolution during friction stir welding (FSW) of mild steel and Ni-based alloy 625 was studied. Regarding the Ni-based alloy, the welding process led to grain refinement caused by discontinuous and continuous dynamic recrystallization, where bulging of the pre-existing grains and subgrain rotation were the primary mechanisms of recrystallization. In the steel, discontinuous dynamic recrystallization was identified as the recovery process experienced by the austenite. Simple shear textures were observed in the regions affected by the deformation of both materials. Although the allotropic transformation obscured the deformation history, the thermo-mechanically affected zone was identified in the steel by simple shear texture components. A new methodology for the study of texture evolution based on rotations of the slip systems using pole figures is presented as an approximation to describe the texture evolution in FSW.
Subject: Stainless-steel
Dynamic Recrystallization
Pure Nickel
Editor: Springer
New York
Citation: Metallurgical And Materials Transactions A-physical Metallurgy And Materials Science . Springer, v. 48A, p. 1092 - 1102, 2017.
Rights: fechado
Identifier DOI: 10.1007/s11661-016-3925-5
Date Issue: 2017
Appears in Collections:Unicamp - Artigos e Outros Documentos

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