@MastersThesis{Alves:2010:JuMaDi,
author = "Alves, Eder Paduan",
title = "Jun{\c{c}}{\~o}es de materiais dissimilares utilizando o
processo de soldagem por fric{\c{c}}{\~a}o rotativa",
school = "Instituto Nacional de Pesquisas Espaciais (INPE)",
year = "2010",
address = "S{\~a}o Jos{\'e} dos Campos",
month = "2010-03-24",
keywords = "soldagem por fric{\c{c}}{\~a}o, soldagem de materiais
dissimilares, soldagem no estado s{\'o}lido, par{\^a}metros de
soldagem, a{\c{c}}o inoxid{\'a}vel, friction welding, dissimilar
materials welding, solid state welding, welding parameters,
stainless steel.",
abstract = "O objetivo desse trabalho {\'e} o desenvolvimento de
jun{\c{c}}{\~o}es no estado s{\'o}lido de materiais
dissimilares alum{\'{\i}}nio AA 1050 e a{\c{c}}o
inoxid{\'a}vel AISI 304, que possam ser utilizadas nas
tubula{\c{c}}{\~o}es de reservat{\'o}rios de propelentes
l{\'{\i}}quidos e demais tubula{\c{c}}{\~o}es dos
Ve{\'{\i}}culos Lan{\c{c}}adores de Sat{\'e}lites. As
jun{\c{c}}{\~o}es foram obtidas pelo processo de soldagem por
fric{\c{c}}{\~a}o rotativa convencional, que combina o calor
gerado entre o atrito de duas superf{\'{\i}}cies e
deforma{\c{c}}{\~a}o mec{\^a}nica. Foram realizados testes de
soldagem com diferentes par{\^a}metros de processo e medida a
temperatura na interface de liga{\c{c}}{\~a}o. Os resultados
desses testes foram analisados por meio de ensaios mec{\^a}nicos
de tra{\c{c}}{\~a}o, microdureza Vickers, ensaios
metalogr{\'a}ficos e MEV-EDX. A resist{\^e}ncia da junta variou
com o aumento do tempo de fric{\c{c}}{\~a}o e com a
utiliza{\c{c}}{\~a}o de diferentes valores de press{\~a}o.
Foram obtidas jun{\c{c}}{\~o}es com propriedades mec{\^a}nicas
superiores a da liga de alum{\'{\i}}nio AA 1050 no tempo de
fric{\c{c}}{\~a}o de 34 segundos, com a fratura ocorrendo no
alum{\'{\i}}nio longe da interface de liga{\c{c}}{\~a}o. A
temperatura monitorada na regi{\~a}o de contato entre os dois
materiais durante o processo apresentou um valor de 376ºC,
coincidindo com a faixa de temperatura de forjamento {\'a} quente
para o alum{\'{\i}}nio AA 1050 (315°C - 430°C). A an{\'a}lise
feita pelo EDX na interface da jun{\c{c}}{\~a}o mostra que
ocorre interdifus{\~a}o entre os principais elementos
qu{\'{\i}}micos dos materiais envolvidos. O processo de soldagem
por fric{\c{c}}{\~a}o convencional demonstra ser um {\'o}timo
m{\'e}todo para obten{\c{c}}{\~a}o de jun{\c{c}}{\~o}es entre
materiais dissimilares que n{\~a}o s{\~a}o poss{\'{\i}}veis
pelos processos de soldagem por fus{\~a}o. ABSTRACT: The purpose
of this work is the development of solid state joints of
dissimilar material AA 1050 aluminum alloy and AISI 304 stainless
steel, which can be used in pipes of tanks of liquid propellants
and other pipes of the Satellite Launch Vehicle. The joints were
obtained using welding process by conventional rotary friction,
which combines the heat generated from friction between two
surfaces and mechanical deformation. Tests were conducted with
different welding process parameters and measured the temperature
at the interface of bonding. The results of these tests were
analyzed by means of tensile tests, Vickers microhardness,
metallographic tests and SEM-EDX. The strength of the joints
varied with increasing friction time and the use of different
pressure values. Joints with superior mechanical properties of the
AA 1050 aluminum alloy could be obtained at a frictional time of
34 seconds, with the fracture occurring in the aluminum away from
the interface of bonding. The temperature monitored in the region
of contact between the two materials during the process had a
value of 376°C, coinciding with the temperature range for hot
forging of the AA 1050 aluminum alloy (315°C - 430°C). The
analysis by EDX at the interface of the junction shows that occur
interdiffusion between the main chemical components of the
materials involved. The welding process by conventional rotary
friction proves to be a good method for obtaining joints between
dissimilar materials that are not possible by the fusion welding
processes.",
committee = "Nono, Maria do Carmo de Andrade (presidente) and An, Chen Ying
(orientador) and Piorino Neto, Francisco (orientador) and Moura
Neto, Carlos",
copyholder = "SID/SCD",
englishtitle = "Joints of dissimilar materials using the process of rotative
friction welding",
language = "pt",
pages = "155",
ibi = "8JMKD3MGP7W/374LNN2",
url = "http://urlib.net/ibi/8JMKD3MGP7W/374LNN2",
targetfile = "publicacao.pdf",
urlaccessdate = "02 maio 2024"
}