Title

Enhanced diffusion and phase transformations during ultrasonic welding of zinc and aluminum

Document Type

Article

Publication Title

Scripta Materialia

Publication Date

5-1-2005

Abstract

Elevated-temperature (513 K) ultrasonic welding of aluminum with zinc was investigated. The interface exhibits structures indicative of enhanced interdiffusion and local melting of Al-Zn solid solution. EDS analysis yielded an interdiffusivity value of 1.9 μm2/s. The enhanced diffusion and melting can be attributed to high strain rate (∼103 s -1) plastic deformation in aluminum, which may increase the instantaneous vacancy concentration as high as ∼10-1. © 2005 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

Volume

52

Issue

9

First Page

939

Last Page

943

DOI

10.1016/j.scriptamat.2004.12.015

ISSN

13596462

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