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Comportamiento microestructural de uniones de materiales disímiles obtenidas por explosión.

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Bibliographic Details
Title: Comportamiento microestructural de uniones de materiales disímiles obtenidas por explosión.
Alternate Title: Microstructural behavior of unions of dissimilar material obtained by explosion welding.
Authors: Castillo-Matos, Juan Ramón1 rcastillom@ismm.edu.cu, Fernández-Columbié, Tomás2 tfernandez@ismm.edu.cu, Alcántara-Borges, Dayanis3 dalcantara@ismm.edu.cu, Rodríguez-González, Isnel2 irgonzalez@ismm.edu.cu
Source: Minería y Geología. abr-jun2017, Vol. 33 Issue 2, p77-91. 15p. 12 Diagrams, 3 Charts.
Subject Terms: *Welding, *Dissimilar welding, *Microstructure, *Steel welding, *Titanium welding
Abstract (English): The objective of this investigation is to establish the behaviour of the microstructure of dissimilar joints made of titanium with AISI 1020, 1066 and 1008 steels through explosion welding. A detonation velocity of 2 800 m/s, a charge radius of 0,345 kg and a collision velocity of 1196, 16 m/s with an explosive volume of 600 cm3 and a density of 1,15 g/cm3 were considered. The microstructures obtained were composed of equiaxed ferrite grains, very fine grains of troostitic type and coarse grains with ferrite grid. Fine and aligned grains of ferrite type are observed in the casted area of both base materials. The metal hardness experienced an increase in samples from 120 HV AISI 1008 steel up to 250 HV for AISI 1066 steel. The AISI 1020 steel joint with titanium has an line shaped interface unlike the AISI 1008 steels with 4063 forms waves with uniform width, which provides a higher mechanical resistance associated with the ductility of the AISI 1008 steel. [ABSTRACT FROM AUTHOR]
Abstract (Spanish): Este trabajo tiene como objetivo establecer el comportamiento microestructural de uniones disímiles de titanio con acero AISI 1020 y de acero AISI 1066 con acero AISI 1008 por el proceso de soldadura por explosión. Se consideró una velocidad de detonación de 2 800 m/s, un radio de la carga de 0,345 kg y una velocidad de colisión de 1 196,16 m/s, con un volumen de explosivo de 600 cm3 y una densidad de 1,15 g/cm3. Las microestructuras obtenidas están compuestas por granos de ferrita equiaxiales, granos muy finos del tipo troostítico y grano grueso con red de ferrita. En la zona fundida de ambos materiales base se observaron granos finos y alineados del tipo ferrítico. La dureza experimentó un incremento en las muestras desde 120 HV, para el acero AISI 1008, hasta 250 HV para el AISI 1066. Se establece que la unión del acero AISI 1020 con el titanio presenta una interfase en forma de línea, a diferencia de la junta de acero AISI 1008 con el AISI 4063 que forma ondulaciones con amplitud regular, lo que garantiza un aumento en la resistencia mecánica, asociada a la ductilidad del acero AISI 1008 [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
Description
Abstract:The objective of this investigation is to establish the behaviour of the microstructure of dissimilar joints made of titanium with AISI 1020, 1066 and 1008 steels through explosion welding. A detonation velocity of 2 800 m/s, a charge radius of 0,345 kg and a collision velocity of 1196, 16 m/s with an explosive volume of 600 cm3 and a density of 1,15 g/cm3 were considered. The microstructures obtained were composed of equiaxed ferrite grains, very fine grains of troostitic type and coarse grains with ferrite grid. Fine and aligned grains of ferrite type are observed in the casted area of both base materials. The metal hardness experienced an increase in samples from 120 HV AISI 1008 steel up to 250 HV for AISI 1066 steel. The AISI 1020 steel joint with titanium has an line shaped interface unlike the AISI 1008 steels with 4063 forms waves with uniform width, which provides a higher mechanical resistance associated with the ductility of the AISI 1008 steel. [ABSTRACT FROM AUTHOR]
ISSN:02585979