The aluminum bronzes are cooper based alloys which contains generally from 8.0% to 12.0% of aluminum. When you add elements such as iron, nickel and manganese along with the phase alpha (α) which is rich in copper and the eutectoid alpha/ gamma2 (α/γ2), it appears precipitations whose nature depends on the elements added quantity, with slow cooling in the sand’s molds (50 ºC/min), are presented alpha.beta´ (α.β´) or alpha, beta´. gamma2 (α, β´.γ2) which because of the different shapes that the precipitations have, they are simplified in k1, k2, k3, k4. For the fusion, it is required a greater care because of its tendency to absorb hydrogen, they respond to heat treatments of quenching and tempering reaching a hardness between 90 Brinell (56 RcB) and 390 Brinell (42 Rc C) always that the k phases are dissolved or uniformly distributed in the main phase.

The aluminum bronzes are cooper based alloys which contains generally from 8.0% to 12.0% of aluminum. When you add elements such as iron, nickel and manganese along with the phase alpha (α) which is rich in copper and the eutectoid alpha/ gamma2 (α/γ2), it appears precipitations whose nature depends on the elements added quantity, with slow cooling in the sand’s molds (50 ºC/min), are presented alpha.beta´ (α.β´) or alpha, beta´. gamma2 (α, β´.γ2) which because of the different shapes that the precipitations have, they are simplified in k1, k2, k3, k4. For the fusion, it is required a greater care because of its tendency to absorb hydrogen, they respond to heat treatments of quenching and tempering reaching a hardness between 90 Brinell (56 RcB) and 390 Brinell (42 Rc C) always that the k phases are dissolved or uniformly distributed in the main phase.

The present research work influences micro-alloys in the bronze alloy, studies the classification bronze Cu1, Cu2, Cu3 and Cu4, defines the structures to the molten state of the materials used in the manufacture of propellers for use in the naval industry . Chemical compositions, metallographic structures, limitations of chemical elements in mechanical properties, as well as limitations of chemical elements in welding processes are defined. The alloy tested, a bronze cast aluminum corresponds to the classification of the complex polyphasic aluminum subgroup 3 or Cu3 classification, NiAl bronze, has an average tensile strength of 64.86 kg / mm2, and an elongation in two inches of 24, 5, the metallographic structure phases are observed: a, a + g2 and k. The corrosion test with the Potentiostat PS4 equipment indicates a corrosion density of 0.38 mA / cm2, the activity in synthetic seawater ...

The high resistance brass belongs to the copper-zinc alloys, which contains elements such as iron, aluminum, manganese and nickel, other elements in very small percentage in such a way that they do not affect the acquired properties and in which manganese increases the solubility of iron, improving mechanical properties and, along with nickel, its resistance to corrosion. The presence of aluminum and iron allow them to be heat treated, the objective of this work is to establish the conditions of heat treatment and its influence on physical, mechanical and corrosion properties.

The high resistance brass belongs to the copper-zinc alloys, which contains elements such as iron, aluminum, manganese and nickel, other elements in very small percentage in such a way that they do not affect the acquired properties and in which manganese increases the solubility of iron, improving mechanical properties and, along with nickel, its resistance to corrosion. The presence of aluminum and iron allow them to be heat treated, the objective of this work is to establish the conditions of heat treatment and its influence on physical, mechanical and corrosion properties.

El presente trabajo de investigación influencia de los microaleantes en la aleación de los bronces, estudia los bronces de clasificación Cu1, Cu2, Cu3 y Cu4, define las estructuras al estado fundido de los materiales empleados en la fabricación de hélices de uso en la industria naval. Se define las composiciones químicas, las estructuras metalográficas, limitaciones de los elementos químicos en las propiedades mecánicas, así como las limitaciones de los elementos químicos en los procesos de soldadura. La aleación ensayada un bronce aluminio fundido corresponde a la clasificación de los cupro aluminio polifásico complejo subgrupo 3 o clasificación Cu3, NiAl bronce, presenta una resistencia a la tracción promedia de 64,86 kg/mm2, y un alargamiento en dos pulgadas de 24,5, la estructura metalográfica se observan fases: a, a+g2 y k. El ensayo de corrosión con el equipo Pote...