The influence of the processing temperature on the microstructure of gamma-TiAl joints brazed with a Ti-15Cu-15Ni alloy

• Tipo: Artigo em Revista Científica Internacional
• Data: 2003

Autores

A. Guedes (Autor) Outra; A. M. P. Pinto (Autor) Outra; Manuel Vieira (Autor) FEUP; Filomena Viana (Autor) FEUP

Revista

A Revista está pendente de validação pelos Serviços Administrativos.

Título: THERMEC'2003, PTS 1-5

Vol. 426-4

Páginas: 4159-4164

Indexação

ISI Web of Knowledge - 4 Citações

Scopus - 4 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia dos materiais

Outras Informações

ID Authenticus: P-000-KPH

DOI: 10.4028/www.scientific.net/MSF.426-432.4159

Abstract (EN): The joining of Ti-47Al-2Cr-2Nb (at.%) by diffusion brazing at 1000, 1050 and 1100degreesC for 10 min, using a Ti-15Cu-15Ni (wt.%) braze alloy was investigated. The microstructure and the chemical composition of the interfaces were studied by scanning electron microscopy (SEM) and by energy dispersive X-ray scans (EDS), respectively. The reaction between the gamma-TiAl alloy and the braze alloy led to the formation of layered interfaces, which should be essentially composed of alpha(2)-Ti3Al and of Ti-Ni-Cu-Al and Ti-Ni-Cu intermetallic compounds. Raising the brazing temperature increases the amount of Al rich intermetallic compounds (Ti-Ni-Cu-Al) and the extension of the interface. The increase of the thickness of the interface is primarily due to the growth of the reaction layer formed near the gamma-TiAl alloy.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 6