repositories = "Revista de Metalurgia"

Encontrado 1,235 documentos, página mostrada 1 de 124

Microstructure influence on fatigue behaviour of austenitic stainless steels with high molybdenum content Influencia de la microestructura en el comportamiento a fatiga de aceros inoxidables austeníticos con alto contenido en molibdeno

Description: Austenitic stainless steels with molybdenum present high mechanical properties and corrosion resistance to aggressive environments. These steels have been used to tank and vessel components for high corrosive liquids as phosphoric, nitric and sulphuric acids. These materials with low carbon and nitr...
Language(s): Español

Approach to the microstructural control of two medium carbon microalloyed steels under hot forming conditions Aproximación al control de la microestructura de dos aceros microaleados con contenido medio de carbono en condiciones de conformado en caliente

Description: The main aim of the present investigation was to study the flow behaviour of two medium carbon microalloyed steels under hot forming conditions, and to analyse their microstructural evolution. The dependence of recrystallized grain size (Drec) on the Zener-Hollomon parameter Z shows a bimodal behavi...
Language(s): Español

Analysis of the hydrogen absorption and its influence on mechanical behaviour of five iron alloys Análisis de la absorción de hidrógeno y de su influencia en el comportamiento mecánico de cinco aleaciones férreas

Description: A study of the influence of hydrogen on the mechanical behaviour of five iron alloys with different carbon state, morphology and content (as spheroidal or lamellar graphite or combined as CFe3) is described here. Experimental observations from tensile (carried out at different crosshead speeds), Cha...
Language(s): Español

Influence of grain size in mechanical properties of austenitic stainless steels Influencia del tamaño del grano en las propiedades mecánicas de los aceros inoxidables austeníticos

Description: The goal of this work is to study the influence of the grain size on mechanical properties of austenitic stainless steels. The study covers both, stable stainless steels and metastable steels. A relevant topic is to identify the differences in the behaviour of both types of steels. First of all, se...
Language(s): Español

Application of kinetics models on gold cementation by zinc from tiosulphate and ammonia solutions Aplicación de modelos cinéticos en la cementación de oro con cinc desde soluciones con tiosulfato y amoniaco

Description: Being thiosulphate leaching of gold one of the proposed alternatives to conventional cyanide leaching of several gold ores, different approaches for metal recovery from pregnant thisulphate solutions had been considered and from these, gold cementation by zinc had not been widely study. In the prese...
Language(s): Español

On-line measurement of mechanical, optical properties and roughness parameters Medida on line de las propiedades mecánicas, ópticas y parámetros de rugosidad

Description: On-line measurements become a central importance for the control of production line output. The target is to replace traditional single local destructive quality checks by a continuous survey of the product properties. Other traditional like pyrometric temperature measurements suffer of well-known b...
Language(s): Español

Al-Al3Ti powders obtained by mechanical alloying and heat treatment Polvos de Al-Al3Ti obtenidos mediante aleado mecánico y tratamiento térmico

Description: Mixed powders of aluminium and titanium (10 wt %) have been mechanically alloyed in an Attritor mill. A metastable solution of titanium in an aluminium matrix is obtained. Changes produced on shape and particle size, structure and microstructure, have been studied when milling time varies between 2 ...
Language(s): Español

Optimization of the laser path and power in the surface heat treatment of diesel engine exhaust values Optimización del recorrido y de la potencia de un haz láser de CO2 en el tratamiento térmico de válvulas de motores diesel

Description: In this article, a model for the process of CO2 laser treatment of diesel engine exhaust valves is presented. The treatment consists on the remelting of a nickel based alloy which has been previously plasma sprayed on the valve seat. Such process can be well described by means of a transient heat tr...
Language(s): Español

Sinterability and properties of HCx PM steel diluted with stainless steels Sinterabilidad y propiedades del acero pulvimetalúrgico HCx diluido con aceros inoxidables

Description: HCx is a powder metallurgy steel developed to combine the corrosion resistance of stainless steel with the wear resistance of tool steels. Therefore, HCx appears to be a suitable material for wear applications in aggressive environments, as valve seat inserts in automotive engines. In this work dilu...
Language(s): Español

Characterisation of ancient weapons. Inclusions as witnesses of quality, process and origin Caracterización de armas antiguas. Las inclusiones testigos de calidad, proceso y origen

Author(s): Rosado, G. , García, J. C.
Description: This work shows the possibility of using new techniques to characterize archaeological items, from weapons to common objects. To sum up, data from weapons manufactured in different ages are shown, from an Iberian "falcata", to a Mondragón sword and also a more actual anvil. Preliminary steps are car...
Language(s): Español

Encontrado 1,235 documentos, página mostrada 1 de 124

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