Formation and growth of intermetallics at the interface between Al-Si and Ti-6Al-4V

• Grant number: 15/18235-0
• Support Opportunities: Regular Research Grants
• Start date: December 01, 2015
• End date: November 30, 2017
• Field of knowledge: Engineering - Materials and Metallurgical Engineering - Physical Metallurgy
• Principal Investigator: Aline Gonçalves Capella
• Grantee: Aline Gonçalves Capella
• Host Institution: Instituto de Ciência e Tecnologia (ICT). Universidade Federal de São Paulo (UNIFESP). Campus São José dos Campos. São José dos Campos , SP, Brazil

Abstract

The industrial demand for hybrid components has increased the necessity for joining dissimilar metallic materials. The junction between Al/Ti alloys is rather difficult due the formation of brittle intermetallic phases in the interface region, which degrades its mechanical and microstructural properties. In equilibrium conditions, the formation of interfacial phases at given temperature is related to phase diagram of the system. However, in experimental observations, the non-equilibrium is often present and the growth mechanism of the intermetallics can be affected by other conditions. Therefore, the understanding of the formation of intermetallics, their morphologies and growth mechanisms in the interface region is essential to guidance, prediction and control of process parameters. The present project aims to study the growth kinetics of the intermetallics at the interface between Al-Si and Ti-6Al-4V, considering the laser sintering of Al-Si, in different compositions, on the titanium alloy. The research will provide the correlation between the experimental data and a semi-analytical mathematical model to evaluate the influence of process parameters in the formation of the intermetallics. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

ALINE CAPELLA DE OLIVEIRA; ANDRÉ FELIPE RIBEIRO MOREIRA; CARINA BARROS MELLO; RUDIMAR RIVA; ROGÉRIO DE MORAES OLIVEIRA. Influence of Si Coating on Interfacial Microstructure of Laser Joining of Titanium and Aluminium Alloys. MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS, v. 21, n. 1, 2017-11-09. (15/18235-0)

ARDILA-RODRIGUEZ, L. A.; MENEZES, B. R. C.; PEREIRA, L. A.; TAKAHASHI, R. J.; OLIVEIRA, A. C.; TRAVESSA, D. N.. Surface modification of aluminum alloys with carbon nanotubes by laser surface melting. SURFACE & COATINGS TECHNOLOGY, v. 377, NOV 15 2019. (15/18235-0)

NARCISO DA SILVA BRIGUENTE, LUCIANA APARECIDA; ONORO, JAVIER; BRIGUENTE, FLAVIO PERPETUO; RESENDE, FABRICIA ASSIS; DOS REIS, JOARES LIDOVINO; PEREIRA REIS, DANIELI APARECIDA; DE OLIVEIRA, ALINE CAPELLA. The Influence of Laser Nitriding on Creep Behavior of Ti-4Al-4V Alloy with Widmanstatten Microstructure. METALS, v. 9, n. 2, FEB 2019. (15/18235-0)