MICROSTRUCTURE EVOLUTION OF LAMINATED ALUMINUM BRONZE – INTERMETALLICS COMPOSITE

1 KONIECZNY Marek
Co-authors:
1 MOLA Renata 1 KARGUL Marcin 1 ANIOŁEK Izabela
Institution:
1 Kielce University of Technology, Faculty of Mechatronics and Mechanical Engineering, Department of Metals Science and Materials Technologies, Kielce, Poland, EU, mkon@tu.kielce.pl
Conference:
27th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 23rd - 25th 2018
Proceedings:
Proceedings 27th International Conference on Metallurgy and Materials
Pages:
1587-1592
ISBN:
978-80-87294-84-0
ISSN:
2694-9296
Published:
24th October 2018
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
12 views / 5 downloads
Abstract

Using aluminum bronze and titanium foils, CuAl10Fe3Mn2 - intermetallic phases laminated composites have been fabricated through reactive bonding at 875 °C in vacuum. Investigations were concerned with the structural transformations of a bronze - Ti couple boundary. Holding for a few minutes resulted in the formation of a thin layer at the interface. Prolongation of the heating time lead to reactions in the liquid state and completely disappearing of titanium layers. Thus, the final microstructure consisted of alternating layers of intermetallics and unreacted CuAl10Fe3Mn2 bronze. The microstructure was revealed in optical and scanning electron microscopy (SEM). The study exhibited the presence of different reaction products in the diffusion zone and their chemical compositions were determined by X-ray microprobe analysis. The occurrence of different intermetallic compounds such as TiCu, Ti2Cu, τ1 (TiCu2Al) and τ2 (TiCuAl) was predicted from the ternary phase diagram Ti-Cu-Al. The predominant part of the intermetallic layers was the mixture of TiCuAl and TiCu2Al phases, since a liquid front of reaction was moving into the aluminum bronze. The microhardness of the reaction products and the elemental components was comparatively measured.

Keywords: titanium, aluminum bronze, intermetallics, laminated composite, microstructure
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