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

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 μm 2/s. The enhanced diffusion and melting...

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Bibliographic Details
Published inScripta materialia Vol. 52; no. 9; pp. 939 - 943
Main Authors Gunduz, Ibrahim E., Ando, Teiichi, Shattuck, Emily, Wong, Peter Y., Doumanidis, Charalabos C.
Format Journal Article
LanguageEnglish
Published New York, NY Elsevier Ltd 01.05.2005
Elsevier Science
Subjects
Applied sciences
Enhanced diffusion
Exact sciences and technology
Excess vacancy
High strain rate deformation
Metals. Metallurgy
Phase stability
Ultrasonic welding
Ultrasonic welding
Phase stability
Enhanced diffusion
High strain rate deformation
Excess vacancy
Phase transformation
Deformation
Stability
High speed
Diffusion
Strain rate
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Summary: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 μm 2/s. The enhanced diffusion and melting can be attributed to high strain rate (∼10 3 s −1) plastic deformation in aluminum, which may increase the instantaneous vacancy concentration as high as ∼10 −1.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2004.12.015