Joining of superalloys to intermetallics using nanolayers

• Tipo: Artigo em Revista Científica Internacional
• Data: 2009

Autores

Ana Sofia Ramos (Autor) FEUP; M. Teresa Vieira (Autor) FEUP; Sónia Simões (Autor) FEUP; Filomena Viana (Autor) FEUP; Manuel F. Vieira (Autor) FEUP

Revista

Título: Advanced Materials Research

Vol. 59

Páginas: 225-229

ISSN: 1022-6680

Editora: Trans Tech Publications

Indexação

ISI Proceedings

Scopus

INSPEC

COMPENDEX

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia dos materiais

Outras Informações

DOI: 10.4028/www.scientific.net/AMR.59.225

Abstract (EN): Joining nickel based superalloys to gamma-TiAl intermetallic alloys will contribute to a more efficient application of these advanced materials, particularly in extreme environments. In this study, Inconel alloy and gamma-TiAl are joined using as filler alternated nanolayer thin films deposited onto each base material. The nanolayers consisted in Ni/Al exothermic reactive multilayer thin films with periods of 5 and 14 nm deposited by d.c. magnetron sputtering in order to improve the adhesion to the substrates and to avoid the reaction between Ni and Al. Diffusion bonding experiments with multilayer coated alloys were performed under vacuum at 800°C by applying 50 MPa during 1h. Bonding was achieved in large areas of the centre of the joints where regions without cracks or pores were produced, especially when using multilayer thin films with a 14 nm modulation period.

Idioma: Inglês

Tipo (Avaliação Docente): Científica