CHARACTERIZATION OF A FRICTION STIR WELDED INCONEL 625 JOINT / CARACTERIZAÇÃO DE UMA JUNTA SOLDADA DE INCONEL 625 OBTIDA PELO PROCESSO FRICTION STIR WELDING

A Nickel superalloy, Inconel 625, was studied in the current work. Friction Stir Welding was carried out with tool rotational speeds ranging from 1200 to 200 rpm and welding speed between of 1 mm/s. In addition, metallographic and microhardness analyzes were performed in the joints. The solid state...

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Published inTecnologia em metalurgia, materiais e mineração Vol. 15; no. 3; p. 271
Main Authors Martinazzi, Douglas, Lemos, Guilherme Vieira Braga, Farina, Alexandre Bellegard, Bergmann, Luciano, Santos, Jorge Fernandez dos, Reguly, Afonso
Format Journal Article
LanguagePortuguese
Published Sao Paulo Associação Brasileira de Metalurgia, Materiais e Mineração 01.07.2018
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Abstract A Nickel superalloy, Inconel 625, was studied in the current work. Friction Stir Welding was carried out with tool rotational speeds ranging from 1200 to 200 rpm and welding speed between of 1 mm/s. In addition, metallographic and microhardness analyzes were performed in the joints. The solid state process was effective and resulted in increased microhardness in the welded joints. Finally, it is suggested that a lower heat input leads to sound welds. Increasing the tool rotational speed (1200 rpm) achieved a higher heat input and porosity formation Uma liga a base de Níquel, popularmente conhecida como Inconel 625, foi estudada no presente trabalho. O processo Friction Stir Welding (FSW) foi realizado com duas velocidades de rotação da ferramenta (1200 e 200 rpm) e velocidade de soldagem entre 1 mm/s. Adicionalmente, análises metalográficas e de microdureza foram realizadas nas juntas soldadas. A aplicação da soldagem no estado sólido foi efetiva e ocasionou um aumento de dureza nas juntas soldadas. Notou-se que um aporte térmico reduzido (velocidade rotação 200 rpm) é aconselhável de modo a produzir juntas soldadas livres de defeitos. Por outro lado, um maior velocidade de rotação (1200 rpm) causou um aumento excessivo no aporte térmico e a presença de porosidades.
AbstractList A Nickel superalloy, Inconel 625, was studied in the current work. Friction Stir Welding was carried out with tool rotational speeds ranging from 1200 to 200 rpm and welding speed between of 1 mm/s. In addition, metallographic and microhardness analyzes were performed in the joints. The solid state process was effective and resulted in increased microhardness in the welded joints. Finally, it is suggested that a lower heat input leads to sound welds. Increasing the tool rotational speed (1200 rpm) achieved a higher heat input and porosity formation Uma liga a base de Níquel, popularmente conhecida como Inconel 625, foi estudada no presente trabalho. O processo Friction Stir Welding (FSW) foi realizado com duas velocidades de rotação da ferramenta (1200 e 200 rpm) e velocidade de soldagem entre 1 mm/s. Adicionalmente, análises metalográficas e de microdureza foram realizadas nas juntas soldadas. A aplicação da soldagem no estado sólido foi efetiva e ocasionou um aumento de dureza nas juntas soldadas. Notou-se que um aporte térmico reduzido (velocidade rotação 200 rpm) é aconselhável de modo a produzir juntas soldadas livres de defeitos. Por outro lado, um maior velocidade de rotação (1200 rpm) causou um aumento excessivo no aporte térmico e a presença de porosidades.
Author Bergmann, Luciano
Lemos, Guilherme Vieira Braga
Reguly, Afonso
Farina, Alexandre Bellegard
Santos, Jorge Fernandez dos
Martinazzi, Douglas
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  fullname: Santos, Jorge Fernandez dos
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Snippet A Nickel superalloy, Inconel 625, was studied in the current work. Friction Stir Welding was carried out with tool rotational speeds ranging from 1200 to 200...
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StartPage 271
SubjectTerms Friction stir welding
Microhardness
Nickel base alloys
Porosity
Superalloys
Welded joints
Title CHARACTERIZATION OF A FRICTION STIR WELDED INCONEL 625 JOINT / CARACTERIZAÇÃO DE UMA JUNTA SOLDADA DE INCONEL 625 OBTIDA PELO PROCESSO FRICTION STIR WELDING
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