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Process parameters optimization and microstructure evaluation on friction spot-welded aluminum/copper dissimilar joints
(Universidade Federal de São Carlos, 2016-11-17)
Dissimilar materials welding is a field of increasing interest for a wide range of industrial applications. Specifically, the welding of aluminum alloys with copper has potential applications in the heating, ventilation ...
Influência da mistura gasosa e da temperatura no processo de nitrocarbonetação a plasma do aço DIN 100Cr6
(Universidade Federal de São Carlos, 2018-08-10)
The surface treatments of metal alloys allow improving the surface qualities by the deposition of another material or by surface modification, producing coatings. The nitrocarburizing, considered one of the most important ...
Processo de laminação com resfriamento criogênico em ligas de magnésio para armazenagem de hidrogênio
(Universidade Federal de São Carlos, 2017-08-25)
The use of metallic hydrides is a competitive alternative to the hydrogen storage in the liquid or gas states. The magnesium is cheap and forms the metal hydride with higher gravimetric capacity. In this work, the commercial ...
Pesquisa em consolidação do fechamento de vazios internos em produtos forjados no aço W.Nr. 1.2738 modificado
(Universidade Federal de São Carlos, 2018-11-23)
During steel ingot solidification, internal voids are expected to be formed in its interior. Such voids, if they stay in the final product after the forging step, will hurt the performance and properties of the final ...
Otimização do processo de soldagem robotizada tandem GMAW do aço ASTM A572 G50
(Universidade Federal de São Carlos, 2018-10-31)
The tandem welding process employs double wire feed in a single torch,
providing increased deposition rate and consequent reduction in process times.
However, the process complexity increases because the correct combination ...
A influência da adição de MgH₂ em Mg visando a aplicação em tanques de armazenagem de hidrogênio
(Universidade Federal de São Carlos, 2018-09-28)
Magnesium Hydride is a promising material for Hydrogen storage, due to its high capacity, excellent reversibility and low cost of metallic magnesium. High energy ball milling is the main technique for obtaining Mg with ...
Fadiga de aços TWIP de baixa densidade produzidos por conformação por spray e forjamento rotativo.
(Universidade Federal de São Carlos, 2020-02-19)
The present study evaluated the mechanical properties in monotonic and
cyclic stress of two low-density steel designed by thermodynamic calculations
aiming stacking fault energy values that would allow different plasticity ...
Refill friction stir spot welding: investigation of the similar and dissimilar welding of AA5754-H22 and AA6061-T6 sheets
(Universidade Federal de São Carlos, 2019-06-03)
The automotive industry is shifting to a new paradigm of material utilization in vehicles. Different parts of the car structural body are increasingly being made of materials selected to have a customized performance ...
Caracterização microestrutural e mecânica da liga Ti-35Nb-7Zr-5Ta produzida por fusão seletiva à laser
(Universidade Federal de São Carlos, 2020-08-10)
Selective Laser Melting (SLM) is an additive manufacturing technique that
consists of a layer-by-layer fusion of a powder bed by scanning a laser enabling
the production of full density parts accordingly to a 3D CAD model ...
Estudo da microestrutura e resistência à corrosão de ligas binárias Ni-Nb solidificadas rapidamente
(Universidade Federal de São Carlos, 2018-02-26)
The The aim of this work is to study the microstructure and corrosion resistance of rapidly solidified binary Ni-xNb alloys (x= 10, 20, 30, 40, 45, 52 e 57 wt%), additionally the microstructure of the Ni-52Nb alloy, prepared ...