The present investigation has determined the average measure of grain size, including a Jeffries planimetric procedure in materials such as SAE 1010 carbon steel, and AISI 316 stainless steel. Likewise, the digital camera incorporated into the metallographic microscope, has enabled the application of image analysis for the study of the microstructure of materials.

The present investigation has determined the average measure of grain size, including a Jeffries planimetric procedure in materials such as SAE 1010 carbon steel, and AISI 316 stainless steel. Likewise, the digital camera incorporated into the metallographic microscope, has enabled the application of image analysis for the study of the microstructure of materials.

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 ...

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...