Mechanical Properties Of Metals
Mostrando 13-24 de 52 artigos, teses e dissertações.
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13. Efeito da irradiação por feixe de elétrons sobre as propriedades físicas e químicas de uma resina de polipropileno. / Effect of electron beam irradiation by on the physical and chemical properties of a resin polypropylene.
A polypropylene resin was modified in the present work by submitting standard tensile specimens to electron beam irradiation, with doses corresponding to 20, 40, 60, 100, 200 and 300kGy. The effect of this irradiation upon the polymer\ s chemical and physical properties was investigated, in particular seeking a possible correlation between these properties a
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/03/2011
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14. Efeito de metais de transição sobre a polarização espontânea na estrutura cristalina de nanopós da família tungstênio bronze
This work aimed the study of the effect of transition metals (Ni, Fe, Co) on the spontaneous polarization of the ferroelectric oxides of tetragonal tungsten bronze (TTB)-type structure of potassium strontium niobate (KSr2Nb5O15) and of the KSr2(FeNb4)O15-d, KSr2(NiNb4)O15-d and KSr2(CoNb4)O15-d solid solutions. All systems investigated were prepared by mecha
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/02/2011
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15. Evaluación de matrices vítreas del sistema SiO2-Al2O3-CaO-MgO para fundentes aglomerados a través la basicidad óptica y criterios estructuro-químicos
The structural constitution and ionic or molecular nature of the glassy matrix in liquid aluminosilicates are governed mainly by the molar ratio O: (Si + Al), and during the welding process affect its thermodynamic, chemical and physical properties as well as in their interactions with the metal droplet and the weld pool. In aluminosilicate fusion, O2-ion in
Soldagem & Inspeção. Publicado em: 2011-06
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16. Evaluation of the corrosion behavior of the al-356 alloy in NaCl solutions
Cellular metals are a new class of materials with promising applications and a unique combination of physical, chemical and mechanical properties. The Al-356 alloy is used to manufacture metal foams from NaCl preforms. Despite the usefulness of these materials, their performance may be affected by corrosion due to residual salt. This paper reports the study
Química Nova. Publicado em: 2011
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17. Efeito da adição de nitrogênio e da temperatura de solubilização nas propriedades mecânicas de aços inoxidáveis duplex fundidos / Effect of the nitrogen addition and solubilization temperature in the mechanical properties of duplex stainless steels cast
Os aços inoxidáveis duplex são assim designados por apresentarem duas fases em sua microestrutura; a ferrita e a austenita. Para estudo foram selecionados dois aços inoxidáveis fundidos de acordo com as normas ASTM A890/A890M Gr. 1A (CD4MCu) e ASTM A890/890M Gr. 1B (CD4MCuN). O que difere estes dois aços inoxidáveis duplex é a presença do nitrogêni
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/06/2010
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18. Otimização topológica de transdutores piezelétricos com gadação funcional de material: projeto, simulação, análise e fabricação. / Topology optimization of piezoelectric transducers considering functionally graded material: design, simulation, analysis and fabrication.
Piezoelectric materials generate displacements when they are excited by electrical potential and electrical potential when they are excited by force or pressure. These materials are widely applied in Precision Mechanics, Mechatronics, and Ultrasonic imaging areas. On the other hand, Functionally Graded Materials (FGM) are advanced materials, whose properties
Publicado em: 2010
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19. 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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20. Soldabilidade do aço USISAC350 na construção metálica
This study aimed to determine the welding characteristics of USISAC350 (16.0 and 37.5 mm thick) and ASTMA588B (16.0 mm thick) steel grades. These steel grades present similar mechanical strength and atmospheric corrosion resistance with a significant difference in alloy design. For this characterization, chemical and microstructural analyses as well as tensi
Publicado em: 2010
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21. Avaliação comparativa de materiais poliméricos em coletores de admissão para aplicações de motores diesel / Comparative evaluation of polymeric materials on intake manifold for diesel engines application
In the modem world where we live, due to incited competition in the automobilist market, emerges the necessity an engine much more economic and il is worsen by the international competition with the Asian markets. Thus, accelerate not only the race for the raise of the quality and cost reduction of products, but also for the environment topics, such as the r
Publicado em: 2010
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22. Influence of high frequency and moderate energy pulses on DLC deposition onto metallic substrates by magnetron sputtering technique
The deposition of Diamond-like carbon (DLC) films brings excellent mechanical, chemical, optical and electronic properties to a large range of materials. However, a problem to be overcome is its poor adhesion on metallic substrates. Usually, a silicon layer must be deposited on the surface of metals previous to DLC film deposition. In fact, in our experiment
Brazilian Journal of Physics. Publicado em: 2009-06
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23. Modificações da Celulose Kraft Branqueada de Eucalipto por Tratamento Térmico e de Radiação Ultravioleta
Cellulose is used like raw material on many products, it may be found in native form (cellulose I) or on its modified forms (cellulose II, III1, III2, IV1, and IV2). Cellulose is obtained by many processes and raw materials being, alkaline pulping of woods (hardwood/softwood) is most frequent. In time function cellulose products are modified since hydrolysis
Publicado em: 2009
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24. Transient solidification, microstruture and properties of Al-Ni alloys / Solidificação transitoria, microestrutura e propriedades de ligas Al-Ni
The development of optimized microstructures during the solidification stage of processing is of fundamental importance to the mechanical properties and to the performance of finished products of metallic alloys. In this study the kinetics of solidification and its effects on macro and microstructural parameters, as well as the consequent influence on the fi
Publicado em: 2009