Estudo da microestrutura formada no processo de soldagem por atrito em aço C-Mn com pino consumível

Lessa, Cleber Rodrigo de Lima; Caregnato, Marcelo Freitas; Cunha, Pedro Henrique Costa Pereira da; Chludzinski, Mariane; Strohaecker, Telmo Roberto; Macedo, Márcio Levi Kramer de; Paes, Marcelo Torres Piza

doi:10.1590/s0104-92242011000100002

Cited by 4 publications

(5 citation statements)

References 6 publications

(8 reference statements)

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“…Still, the microhardness was decreased when the measurements were moving from TMZA-Plug to HAZ-Plug. Previous works [3,6,8,27] have also shown this low variation in FHPP microhardness. Finally, as can be seen in Figure 16, the TIG macrograph displayed tungsten (W) inclusions with increased microhardness (612.5 ± 56.8 HV 0.5 ).…”

Section: Resultssupporting

confidence: 59%

“…On the other hand, the time to perform the TIG joint was higher (66 s), which possibly promoted a superior cooling time. Figure 7 also shows that is possible to produce an adequate joint using lower welding forces than previous studies [4,6,27–29]. In terms of application, less robust equipment can be used.…”

Section: Resultsmentioning

confidence: 90%

“…Plug dimensions and bar used as the BM for both welding processes are shown in Figure 2. FHPP parameters and geometries were chosen based on previous studies [1,2,4,8,9,17–19].

Figure 2 Sketch presenting FHPP process components and their geometries (in mm). …”

Section: Methodsmentioning

confidence: 99%

“…The TP1 was located close to the BM top surface, TP2 was in the BM thickness centre, and TP3 was near to the bottom surface of the BM, as it is shown in Figure 4(c). The distance between the TP and FHPP was 2 mm [1,18,19].

Figure 4 Thermocouple positions of FHPP and TIG joints (in mm).…”

Section: Methodsmentioning

confidence: 99%

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Friction Hydro-Pillar Processing and Tungsten Inert Gas Welding of a Duplex Stainless Steel

Lessa

Martinazzi

Figueiredo

et al. 2019

Materials Science and Technology

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This work presents friction hydro-pillar processing (FHPP) and tungsten inert gas (TIG) welding of SAF2205 duplex stainless steel. Weld microstructural and mechanical characterisation were carried out based on the standards (DNV-RP-F112 and DNV-OS-F101). Therefore, optical microscopy, scanning electron microscopy, energy dispersive X-ray spectroscopy, and X-ray diffraction were used. In addition, mechanical properties were evaluated by microhardness measurements. Furthermore, the joining processes were thermodynamically simulated for confirmation of the expected phases in each welding method. It was possible to verify the phases developed after the experimental welding (FHPP and TIG) as well as the ones obtained in the thermodynamic analyses. Finally, it was noted that FHPP promoted mechanical and metallurgical features requested by the standards.

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Section: Resultssupporting

confidence: 59%

Section: Resultsmentioning

confidence: 90%

“…Plug dimensions and bar used as the BM for both welding processes are shown in Figure 2. FHPP parameters and geometries were chosen based on previous studies [1,2,4,8,9,17–19].

Figure 2 Sketch presenting FHPP process components and their geometries (in mm). …”

Section: Methodsmentioning

confidence: 99%

Figure 4 Thermocouple positions of FHPP and TIG joints (in mm).…”

Section: Methodsmentioning

confidence: 99%

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Friction Hydro-Pillar Processing and Tungsten Inert Gas Welding of a Duplex Stainless Steel

Lessa

Martinazzi

Figueiredo

et al. 2019

Materials Science and Technology

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“…Este fenômeno representa uma forte influência para as microestruturas, mas principalmente para as propriedades mecânicas, pois os materiais podem apresentar um comportamento de caráter anisotrópico com variações de propriedades mecânicas de acordo com a posição de solicitação. [6][7][8]…”

Section: Micrografia Do Metal De Baseunclassified

Estudo Comparativo Da Zona Termicamente Afetada De Juntas Soldadas Obtidas Pelos Processos De Soldagem Fcaw E Smaw

Júnior¹,

Silva²,

Vieira³

et al. 2014

ABM Proceedings

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ResumoDentro das refinarias os tanques de armazenamento desempenham um papel fundamental, pois armazenam matéria prima para abastecimento das unidades, produtos intermediários entre os processos e produtos finais para distribuição. O presente trabalho apresenta de modo comparativo as características mecânicas e microestruturais da zona termicamente afetada de juntas soldadas formadas pelos processos de soldagem com Arame Tubular (FCAW) e Eletrodo Revestido (SMAW) aplicados na fabricação e reparo de tanques de armazenamento utilizados na indústria de petróleo. Os procedimentos de soldagem para cada junta soldada seguiram EPS (Especificação do Procedimento de Soldagem) utilizada por uma empresa que fabrica e repara tanques de armazenamento para indústrias de petróleo. O metal de base utilizado foi o aço estrutural de classificação ASTM A-36 em geometria plana e com chanfro tipo K. A solda foi multipasses de topo na posição horizontal (2G). Para realização deste estudo foram realizados quatro tipos de ensaios destrutivos: tração, microdureza Vickers, impacto Charpy e metalográfia. Os resultados indicaram a importância da seleção do processo de soldagem em termos de produção e formação da junta soldada e uma heterogeneidade devido as diferentes microestruturas presentes nas zonas termicamente afetadas que demostraram grande influência no perfil de microdureza. Palavras-chave: Características mecânicas e microestruturais; Zona termicamente afetada; Aço ASTM-A36; FCAW; SMAW. COMPARATIVE STUDY ABOUT HEAT AFFECTED ZONE OF WELDED JOINTS OBTAINED BY SMAW AND FCAW WELDING PROCESSES AbstractThe storage tanks play a key role inside of refineries, because store raw material to supply the units, intermediate products between the processes and the final products for distribution. This paper compares the mechanical characteristics and microstructure of heat affected zone in welded joints formed by Shielded Metal Arc Welding (SMAW) and Flux-cored arc welding (FCAW) processes applied in the manufacture and repair of storage tanks used in the petroleum industry. The welding procedures for each welded joint followed WPS (Welding Procedure Specification) used by a company that manufactures and repairs storage tanks for petroleum industry. The base metal used ASTM A-36 steel in plane geometry and chamfer type K. The kind of weld was top multipasses horizontally (2G). For realized this study were carried out four types of destructive tests: tensile test, Vickers microhardness, Charpy impact and metallographic analysis. The results indicate the importance of the welding process, regarding production and formation of the welded joint, and a heterogeneity due the different microstructures present in the heat affected zone areas that demonstrated great influence the profile of microhardness.

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Effect of previous heating treatments conditions and gas metal arc welding (GMAW) on mechanical and microstructural properties of HSLA steel DOMEX 460MC

Rocha,

Rosa,

dos Santos Paes

2024

J Braz. Soc. Mech. Sci. Eng.

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Estudo da microestrutura formada no processo de soldagem por atrito em aço C-Mn com pino consumível

Cited by 4 publications

References 6 publications

Friction Hydro-Pillar Processing and Tungsten Inert Gas Welding of a Duplex Stainless Steel

Friction Hydro-Pillar Processing and Tungsten Inert Gas Welding of a Duplex Stainless Steel

Estudo Comparativo Da Zona Termicamente Afetada De Juntas Soldadas Obtidas Pelos Processos De Soldagem Fcaw E Smaw

Effect of previous heating treatments conditions and gas metal arc welding (GMAW) on mechanical and microstructural properties of HSLA steel DOMEX 460MC

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