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Design, production and advanced characterization of CoCrFeMnNi-based medium- and high-entropy alloys: understanding the interplay with composition, microstructure, and mechanical properties
(Universidade Federal de São Carlos, 2024-04-12)
Worldwide, a great research effort is being employed in the development of Medium/high entropy alloys (M/HEAs). Among the M/HEAs produced to date, great emphasis is given to the equiatomic Co20Cr20Fe20Mn20Ni20 (at.%) alloy ...
Ligas beta Ti-Nb-Zr(-Ta-Mo) multiprincipais com baixo módulo de elasticidade
(Universidade Federal de São Carlos, 2023-07-25)
The use of Ti-6Al-4V alloy as a biomaterial is more convenient among Ti alloys,
as it is produced on a larger scale due to aeronautical applications. However, it
is known that Ti-6Al-4V alloy can be harmful to the patient’s ...
Produção e caracterização de ligas Al-(3, 5, 10)Mg-0,1Sc por solidificação direcional e refusão superficial a laser
(Universidade Federal de São Carlos, 2024-04-22)
The present study involved the investigation of the Al-3, -5, and -10% Mg-0.1% Sc alloys processed either by Directional Solidification (DS) or Laser Surface Remelting (LSR), as well as correlating the corresponding ...
Microstructure, corrosion, and wear resistance of a boron-modified duplex stainless steel produced by laser powder bed fusion
(Universidade Federal de São Carlos, 2024-03-18)
A duplex stainless steels (DSS) containing 0.3 and 0.6 wt.% of boron were produced by laser powder bed fusion (L-PBD) with parameters based on Box-Behnken design. The microstructure was evaluated by XRD, OM, SEM, EBSD, ...
Design de ligas multicomponentes do sistema Ti-V-Nb-M (M = Cr, Co E Ni) para armazenagem de hidrogênio
(Universidade Federal de São Carlos, 2023-05-15)
Body Centered Cubic (BCC) multicomponent alloys have gained attention in the research of materials for H2 storage. These alloys have the potential to optimize H2 storage properties via compositional control. However, the ...
Estabilidade microestrutural da liga Cu-0,8Cr-0,07Zr após extrusão em canal angular em temperatura criogênica
(Universidade Federal de São Carlos, 2021-12-20)
Severe Plastic Deformation (SPD) are well established routes with regard to the
intense microstructural refining of metals and alloys up to the submicrometer (<
1 μm) and/or nanometer (< 100 nm) scales. Lowering the ...
Simulação física da ZTA de aços inoxidáveis lean duplex 2101 e 2404 em sistema Gleeble®: evolução microestrutural e resistência à corrosão
(Universidade Federal de São Carlos, 2022-06-08)
In this study, physical simulations of welding thermal cycles were performed to evaluate the microstructural evolution and corrosion resistance of the heat-affected zones (ZTAs) of lean duplex stainless steels (LDSSs) 2101 ...
Avaliação de corrosão sob tensão e corrosão-fadiga do aço API 5L X70 em solução etanólica sintética
(Universidade Federal de São Carlos, 2022-04-07)
API X70 steel has been widely used in Brazil for the manufacture of ethanol transport pipelines, however, a recognized problem in carbon steel pipes exposed to ethanol is stress corrosion cracking (SCC) and, in addition, ...
Influência da adição de cério na microestrutura e comportamento de oxidação de aços inoxidáveis Fe-Mn-Si-Cr-Ni com efeito de memória de forma
(Universidade Federal de São Carlos, 2020-01-15)
In this study, the influence of small cerium additions on the microstructure and
oxidation behavior of Fe-Mn-Si-Cr-Ni shape memory stainless steels (SMSSs)
was investigated. The results show that the Ce addition in the ...
Design of high entropy alloys for hydrogen storage: study of the Mg-V-Al-Cr-Ni, Mg-Al-Ti-Mn-Nb and Ti-V-Nb-Cr systems
(Universidade Federal de São Carlos, 2021-05-21)
The advent of high entropy alloys (HEA) has brought new opportunities and challenges to metallurgy. Due to extensive compositional field of HEAs, the possibility of controlling properties in a composition-driven approach ...