Joining of Superalloys to Intermetallics Using Nanolayers

• Type: Article in International Conference Proceedings Book
• Date: 2009

Authors

Ramos, AS (Author) Other; Vieira, MT (Author) Other; Simoes, S (Author) FEUP; Viana, F (Author) FEUP; Vieira, MF (Author) FEUP

Conference proceedings International

Title: 1ST INTERNATIONAL CONFERENCE ON NEW MATERIALS FOR EXTREME ENVIRONMENTS

Pages: 225-229

1st International Conference on New Materials for Extreme Environments

San Sebastian, SPAIN, JUN 02-04, 2008

Indexing

ISI Web of Knowledge - 38 Citations

Scopus - 44 Citations

Scientific classification

FOS: Engineering and technology > Materials engineering

Other information

Authenticus ID: P-003-SH2

DOI: 10.4028/3-908454-01-8.225

Abstract (EN): Joining nickel based superalloys to gamma-TiAl intermatallic 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 rim 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 degrees 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 5