Fire effects in microstructure of copper based alloys

Authors

  • Geovany Sánchez-Torres Instituto Superior Minero Metalúrgico

Keywords:

copper based alloys, electrical conductors, fire

Abstract

The microstructural characterization of the Cu-DHP type copper based alloy used for the manufacture of PVC lined electrical conductors was completed. Four types of conductors were selected: 2,5 mm and 4 mm one-wire conductors and multi-wire conductors of 55 and 113 threads. The microstructure of the conductor on delivery state was analyzed; both the cross and longitudinal sections. The analysis results after the conductors were exposed to the fire could indicate that the structure type was: randomly oriented equiaxial grains of various sizes with curved and straight edges; grain and macle thickening and of eutectic formation. The hardness analysis results indicated a greater reduction of hardness in the multi-wire conductor of 113 threads.

Downloads

Download data is not yet available.

Author Biography

Geovany Sánchez-Torres, Instituto Superior Minero Metalúrgico

Ingeniería mecánica

References

BABRAUSKAS, V. 2003: Fires due to Electric Arcing: Can ‘Cause’ Beads Be Distinguished from ‘Victim’ Beads by Physical or Chemical Testing? Fire and Materials p. 189–201.

CLARKE, C. 2006: Evaluation of fire damaged copper wire. Advanced Materials & Processes, April.

HUMPHREYS, J. 2006: Recrystallization, Materials Science Center. The University of Manchester. Disponible en: http://www.recrystallization.info

HYUK, S.; CHEOL-KIM, R. & PARK, K. 2000: Microstructure Changes in Equal Channel Angular Pressed Low Carbon Steel by Static Annealing. Acta Materialia (48): 3 245–3 252.

KUZNIK, F.; VIRGONE, J. & NOEL, J. 2008: Optimization of a phase change material wallboard for building use. Applied Thermal Engineering 28(11-12): 1 291–1 298.

LIENHARD, J. & LIENHARD, J. 2005: Transfer textbook. Phlogiston Press.

LUGO, N.; CABRERA, J.; PUCHI, E.; & PRADO, J. 2003: Deformación a alta temperatura bajo condiciones de deformación variable de un acero ARMCO. Revista de la Facultad de Ingeniería de la U.C.V. 18(2): 47–61.

MÉNDEZ, V. 2000: Impacto ambiental producido por el proceso de combustión en calderas. Tesis de maestría. Universidad de Cienfuegos. 92 p.

MONTOLIU, A. 2007: El fuego y la electricidad en instalaciones de baja y alta tensión. Fundación Mapfre.

POLMEAR, I. 2006: Light Alloys, from traditional Alloys to Nanocrystals. Ed. Elsevier.

PONS, G. 2003: Dinámica del fuego. Origen y causa de los incendios. Ed. Abisal.

PRASAD, Y. & RAO, K. 2004: Mechanisms of high temperature deformation in electrolytic copper in extended ranges of temperature and strain rate. Materials Science and Engineering A. 3(74): 335–341.

RAMUNNI, V.; DE PAIVA-COELHO, T. & DE MIRANDA, P. 2006: Interaction of hydrogen with the microstructure of low-carbon steel. Materials Science and Engineering A. 435 - 436 504-514.

TARÍN, R. & BADÍA, P. 2006: Apuntes Aleaciones Ligeras (guiones y figuras) E.T.S.I. de Aeronáuticos.

Published

2015-09-19

How to Cite

Sánchez-Torres, G. (2015). Fire effects in microstructure of copper based alloys. Ciencia & Futuro, 5(3), 38–62. Retrieved from https://revista.ismm.edu.cu/index.php/revistacyf/article/view/1171

Issue

Section

Ciencia Universitaria