Microstructure of Cu-Zn-Al Shape Memory Alloys Joined by Electric Stored-Energy Welding

Ion Mitelea; Claudia M. Dorohoi; Corneliu Craciunescu

doi:10.4028/www.scientific.net/SSP.172-174.208

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HomeSolid State PhenomenaSolid State Phenomena Vols. 172-174Microstructure of Cu-Zn-Al Shape Memory Alloys...

Microstructure of Cu-Zn-Al Shape Memory Alloys Joined by Electric Stored-Energy Welding

Abstract:

Electric welding with energy stored in condensers offers the advantage of a reduced welding power and a better balance of the energy supplied in the joining area of the components. It can also supply hard thermal regimes in a short time, while the heat is generated only by the contact resistance. This is a major advantage for welding materials with high thermal conductivity, among which are the copper “based shape memory alloys. Since the energy accumulation only needs a few seconds and is released in very short time, it has favorable influence on welding, so that the effect on the shape memory effect is reduced. The paper details the process of electric stored-energy point welding, the structural and phase transitions in the welded seam and in the heat affected zone, as well as the influence of the welding process on the shape memory effect.

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Solid State Phenomena (Volumes 172-174)

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208-213

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https://doi.org/10.4028/www.scientific.net/SSP.172-174.208

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Online since:

June 2011

Authors:

Ion Mitelea, Claudia M. Dorohoi, Corneliu Craciunescu

Keywords:

Electric-Stored Energy Welding, Joining, Shape Memory Alloy Actuator, Welding Interface

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