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Journal of Non-Equilibrium Thermodynamics

Founded by Keller, Jürgen U.

Editor-in-Chief: Hoffmann, Karl Heinz

Managing Editor: Prehl, Janett / Schwalbe, Karsten

Ed. by Michaelides, Efstathios E. / Rubi, J. Miguel

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1437-4358
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Non-Equilibrium Crystallization with Magnetic Stirring in Pt/Inconel 625 Micro-Joints Welded by Capacitor Charge

Grzegorz Boczkal / Karolina Dadun
Published Online: 2018-11-22 | DOI: https://doi.org/10.1515/jnet-2018-0025

Abstract

The presented work describes issue of magnetic mixing and segregation of metals during the formation of micro-joints using the capacitor welding method. The key aspect is the very short weld time, which is below 2 ms. The Pt/Inconel 625 micro-joints have been tested in the work. The 100-μm platinum wire was welded to Inconel 625 with the same thickness. During the welding process, the capacitor discharge characteristics were recorded with the oscilloscope. This allowed for a mathematical description of phenomena occurring during the creation of the micro-joint. Observations of the micro-structures from the scanning electron microscope in BSE mode confirmed the strong micro-segregation of the joint components. In addition, the effect of magnetic mixing of the joint components was observed. Weld geometry results obtained from the calculations showed good compliance with the real joint micro-structure observation data.

Keywords: non-equilibrium crystallization; magnetic mixing; capacitor welding method

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About the article

Received: 2018-06-21

Revised: 2018-09-20

Accepted: 2018-10-26

Published Online: 2018-11-22


Funding Source: Ministerstwo Nauki i Szkolnictwa Wyższego

Award identifier / Grant number: 11.11.180.958

This research was supported financially by Ministry of Science and Higher Education under grant number 11.11.180.958.


Citation Information: Journal of Non-Equilibrium Thermodynamics, ISSN (Online) 1437-4358, ISSN (Print) 0340-0204, DOI: https://doi.org/10.1515/jnet-2018-0025.

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