Avaliação de juntas soldadas do aço ASTM 335 P91 submetidas a TTPS
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Avaliação de juntas soldadas do aço ASTM 335 P91 submetidas a TTPS

Avaliação de juntas soldadas do aço ASTM 335 P91 submetidas a TTPS


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About the Book

Os aços Grau 91 vêm sendo amplamente utilizados como componentes para trabalhar em elevadas temperaturas nas indústrias de geração de energia, petroquímica e refinarias de petróleo em consequência da sua excelente resistência a fluência e corrosão em altas temperaturas. Foram confeccionadas juntas tubulares do aço Grau 91, por meio de soldagem usando o processo TIG na raiz e o processo Eletrodo Revestido nas camadas de soldagem subsequentes. As juntas soldadas foram submetidas ao tratamento térmico pós- soldagem (TTPS) a 760°C com diferentes tempos de patamar e posteriormente, as propriedades mecânicas foram analisadas para verificar o atendimento aos requisitos normativos, por meio da realização de ensaios de tração convencional, impacto Charpy, dureza Vickers e caracterização microestrutural. Os resultados mostraram que as propriedades mecânicas sofreram alterações, como uma melhor resistência ao impacto e diminuição da dureza com o aumento do tempo de patamar de temperatura, indicando que é possível obter uma melhor combinação de resistência mecânica e tenacidade com o tempo de patamar maior do que 4 horas no TTPS nas condições utilizadas.


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Product Details
  • ISBN-13: 9786139713110
  • Publisher: Novas Edicoes Academicas
  • Binding: Paperback
  • Language: Portuguese
  • Returnable: N
  • Weight: 254 gr
  • ISBN-10: 6139713110
  • Publisher Date: 13 Jul 2021
  • Height: 229 mm
  • No of Pages: 132
  • Spine Width: 8 mm
  • Width: 152 mm


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Avaliação de juntas soldadas do aço ASTM 335 P91 submetidas a TTPS
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