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Master's Dissertation
DOI
https://doi.org/10.11606/D.85.2015.tde-18112015-094741
Document
Author
Full name
Igor Colado Porto Martins
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2015
Supervisor
Committee
Monteiro, Waldemar Alfredo (President)
Andrade, Arnaldo Homobono Paes de
Schön, Claudio Geraldo
Title in Portuguese
Avaliação microestrutural e mecânica da Incoloy® 945 após tratamentos térmicos
Keywords in Portuguese
camada do pré-sal
Incoloy
níquel
superliga
tratamentos térmicos
Abstract in Portuguese
Superligas de níquel são materiais mundialmente empregados nas áreas de petróleo e gás natural, aeroespacial e nuclear. A Incoloy® 945 uma liga desenvolvida em meados dos anos 2000, para ser uma liga hibrida entre a Inconel® 718 e Incoloy® 925, concebendo uma liga com propriedades mecânicas e anticorrosivas capaz de suportar as mais adversas operações de serviço. Neste trabalho foram determinadas algumas características mecânicas do material, após laminação a frio, seguindo duas diferentes rotas de tratamento térmico. Foram realizados testes de dureza Vickers e tração, onde mostrou que a rota experimental criada no IPEN (por intermédio da análise por calorimetria exploratória diferencial), tem a mesma resistência mecânica do que a rota comercialmente usada, contudo possui uma maior ductilidade. O material demonstra uma excepcional união resistência mecânica e ductilidade, podendo ser empregada no uso de tubulações e válvulas de alta complexidade de manufatura, para a exploração das camadas do pré-sal.
Title in English
Microstructural and mechanical evaluation of Incoloy® 945 after heats treatment
Keywords in English
heats treatments
Incoloy
nickel
pré-salt layer
superalloys
Abstract in English
Nickel super alloy materials are used worldwide in the areas of oil and gas, aerospace and nuclear. The Incoloy® 945 an alloy developed in the mid-2000s, to be a hybrid alloy between the Inconel® 718 and Incoloy® 925 by designing an alloy with mechanical and anti-corrosion properties able to withstand the most adverse service operations. In this work we were determined some mechanical characteristics of the material after cold rolling, following two different routes of heat treatment. Hardness Vickers tests and traction test were conducted, which showed that the experimental route created at IPEN (through analysis by differential scanning calorimetry), has the same mechanical strength than the route used commercially, it nevertheless has a higher ductility. The material shows an exceptional union strength and ductility and can be used in the use of pipes and high complexity manufacturing valves for the operation of the pre-salt layers.
 
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Publishing Date
2015-12-03
 
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