The Effect of Ag Diffusion Barrier on the Microstructure of a Titanium Dissimilar Joining

Abstract:

Article Preview

In this study, joining characteristics of dissimilar Ti and Cu metals have been investigated, when using both an Ag-based eutectic alloy as a filler and an Ag layer present on Ti base metal as a diffusion barrier. The observed microstructures were classified into three characteristic types, depending on the presence of a Ag layer at the Ti interface, e.g. first, the sample retaining thick continuous intermetallic layers, e.g. Ti2Cu, TiCu, Ti3Cu4, Ti2Cu3, and TiCu4 by a significant dissolution of the Ti atoms into the molten filler, in the absence of a Ag coating layer onto the Ti base metal, second, the sample with relatively thin Ti-Cu intermetallic layers by the reduced reaction of Ti with Cu due to a prominent decrease in the Ti dissolution, owing to the role of the Ag coating layer as a diffusion barrier, and finally, the sample without any brittle Ti-Cu intermetallics in the joint by a complete suppression of both the dissolution of the Ti atoms and its reaction with the Cu elements in the molten filler due to the presence of a Ag layer.

Info:

Periodical:

Solid State Phenomena (Volume 135)

Edited by:

Chang Kyu Rhee

Pages:

135-138

DOI:

10.4028/www.scientific.net/SSP.135.135

Citation:

M. K. Lee et al., "The Effect of Ag Diffusion Barrier on the Microstructure of a Titanium Dissimilar Joining", Solid State Phenomena, Vol. 135, pp. 135-138, 2008

Online since:

February 2008

Export:

Price:

$35.00

In order to see related information, you need to Login.

In order to see related information, you need to Login.