Alloying Elements
Mostrando 25-36 de 48 artigos, teses e dissertações.
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25. Estudo comparativo da estampabilidade da liga de aluminio AA1050 partindo de placas obtidas por vazamento direto e bobinas obtidas por vazamento contínuo. / Comparative study of the deep drawing alloy AA1050 from plates obtained by direct casting and coils obtained by continuos casting.
Stampability of aluminum alloys is a subject of interest to several industrial sectors because they are largely used in the fabrication of several parts and components. The choice is based upon the stampability and the relative manufacturing capability in relation to other aluminum alloys that contain larger amounts of alloying elements and, consequently, hi
Publicado em: 2010
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26. Influência dos elementos de liga no intervalo de solidificação do aço inoxidável martensítico CA6NM. / Alloying elements influence on the CA6NM martensitic stainless steel solidification interval.
The influence of alloying elements like Chromium, Nickel, Carbon and Nitrogen on the solidification interval on a CA6NM martensitic stainless steel casting was investigated. This steel class, mainly used on large castings, applies due to the fact that it has very good impact resistance, and satisfactory corrosion properties. Besides that, this stainless stee
Publicado em: 2009
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27. Effect of Ti and Nb Additions on the Formation of Craters for IF Steel Galvanneal Coatings
Interstitial Free steels feature alloying elements present in an ultra low C matrix that account for C stabilization and consequently a high number of C free interstitials in a ferrite matrix that give these steels the ideal texture, low yield point, favorable plastic strain ratios, high elongation and n-value necessary for an ideal performance on forming pr
Publicado em: 2009
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28. Estudo da usinabilidade dos ferros fundidos cinzentos ligados (CrCuSn e CrCuSnMo) e vermicular classe 350 no fresamento frontal em alta velocidade de corte
Cast iron is used to manufacture engine blocks due to its mechanical and physical properties like thermal conductivity and dumpy capacity, which are fundamental to these applications. Compacted graphite iron (CGI) has higher mechanical strength compared to gray cast iron and can be a great advantage in these type of mechanical parts. The compression rate can
Publicado em: 2009
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29. Hollow cathode discharge: application of a deposition treatment in the iron sintering
The influence of a previous deposition treatment on the final amount of alloying elements (Cr and Ni) deposited and diffused into the surface of iron parts sintered in hollow cathode discharge (HCD) was studied. Cylindrical pure iron pressed samples, being a central cathode, were placed concentrically in the interior of an AISI 310 steel machine-made outer c
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2008-06
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30. Estudo do comportamento de corrosão dos intermetálicos presentes na liga AA 2024-T3, por meio de técnicas de microscopia associada a técnicas eletroquímicas / INVESTIGATION ON THE CORROSION BEHAVIOUR OF THE INTERMETALLICS IN THE AA 2024-T3 ALLOY BY MICROSCOPY ASSOCIATED TO ELECTROCHEMICAL TECHNIQUES.
The AA2024-T3 aluminium alloy is largely used in the aerospace industry. It has high mechanical properties due to the presence of alloying elements, mainly copper, that form finely distributed precipitates coherent with the matrix, during controlled aging treatment. However, during this process, large intermetallics (IMs) are also formed with composition and
Publicado em: 2008
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31. Fadiga termomecânica em ligas de ferro fundido cinzento para discos de freio automotivos / Thermomechanical fatigue in gray cast iron alloys to automotive brake discs
Brake discs are submitted to thermal and mechanical stress that can be relatively high during abrupt braking action happens (fractions of seconds), causing the temperature to reach values as high as 600ºC. This temperature variation results in thermal shocks that can generate cracks and/or a large amount of plastic deformation in the disk. The main aim of t
Publicado em: 2007
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32. Effect of niobium´s content and the cooling rate on the microstructure and corrosion resistance of the Ti-Nb / Efeito do teor de niobio e da taxa de resfriamento sobre a microestrutura e resistencia a corrosão de ligas Ti-Nb
Pure titanium is used commercially as biomaterial in the manufacture of odontologic and orthopedic prosthesis, due to its high biocompatibility and good corrosion resistance. The use of the pure titanium shows deficiency in mechanical proprieties because the mechanics requests are high. When the mechanic s requests are high, like in the hip s total implant,
Publicado em: 2007
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33. Mecano-síntese e caracterização de ligas de Ti-Nb-Sn
Mechanical alloying is a powder processing technique involving cold welding, fracturing mechanisms and rewelding of powder particles in a ball mill. The present work applied this technique with the purpose of processing titanium, niobium and tin alloys, through planetary ball mill and attritor mill. The atomic percentages of these elements were varied in six
Publicado em: 2006
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34. Microstructure and mechanical characterization of Ti-Cu alloys for dental applications / Caracterização microestrutural e mecanica de ligas Ti-Cu para aplicações odontologicas
Due to characteristics like high strength-to-weight ratio, high biocompatibility, enhanced corrosion resistance and the possibility of controlling elastic behavior by proper addition of alloying elements, the use of titanium by medical and dental industries is continuously growing. In this work, Ti-Cu alloys with a Cu content varying from 5% to 15 wt% were p
Publicado em: 2006
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35. The effect of alloying on the resistance of carbon steel for oilfield applications to CO2 corrosion
A systematic study has been conducted to investigate the influence of a wide range of alloying elements and different processing conditions on the resistance of low-carbon steels to CO2 corrosion. Strong carbide-forming microalloying elements such as Ti, Nb and V, along with Cr additions, and different levels of Mn, Si, Cu, Mo and Ni, have been explored, alo
Materials Research. Publicado em: 2005-12
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36. AplicaÃÃo dos mÃtodos de pulso-eco e resonÃncia acÃstica para caracterizaÃÃo nÃo destrutiva de propriedades elÃsticas e microestruturais de vidros especiais e aÃo ferrÃtico degradado por fluÃncia
The elastic properties, homogeneity, attenuation of the propagation of ultrasonic waves and associated structure with some types of special glass were analyzed with the pulse-echo method. A total of seven samples of glass containing neodymium, lead, zirconium and niobium, as additives were analyzed. As a result, elastic constants such as coefficient of Poiss
Publicado em: 2005