2019
DOI: 10.1590/0104-9224/si24.04
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Avaliação Microestrutural e Resistência à Corrosão de uma Junta Dissimilar entre um Aço de Alta Resistência e Baixa Liga e Aço um Inoxidável Duplex

Abstract: Resumo A união entre materiais dissimilares tem sido amplamente aplicada na indústria de petróleo e gás. Em geral, este tipo de soldagem é mais sensível às diferenças de composição química existente entre os metais envolvidos. Diante dessa perspectiva, este trabalho tem por objetivo avaliar, por união autógena, a microestrutura de uma junta soldada entre um aço de alta resistência e baixa liga da classe API 5L X80 e um aço inoxidável duplex UNS S32304. Além disso, estudou-se o comportamento quanto à resistênci… Show more

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“…Eighteen microhardness points were defined, 8 points spaced 0.25 mm in the transition region near HAZ between both metals and 10 points spaced 0.5 mm in the WM region. The Vickers microhardness equipment from the SHIMADZU-HMV manufacturer, where the applied load was 0.3 kgf and the standard time of application of the load of 15 seconds, was used for the execution of the test in both specimens 10,11 .…”
Section: Specimenmentioning
confidence: 99%
“…Eighteen microhardness points were defined, 8 points spaced 0.25 mm in the transition region near HAZ between both metals and 10 points spaced 0.5 mm in the WM region. The Vickers microhardness equipment from the SHIMADZU-HMV manufacturer, where the applied load was 0.3 kgf and the standard time of application of the load of 15 seconds, was used for the execution of the test in both specimens 10,11 .…”
Section: Specimenmentioning
confidence: 99%