Article
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Crystallization of Zr-Based Amorphous Alloys in Laser Welding
Version 1
: Received: 14 June 2023 / Approved: 14 June 2023 / Online: 14 June 2023 (10:10:39 CEST)
A peer-reviewed article of this Preprint also exists.
Yan, S.; Song, C.; Huang, L.; Han, L.; Wang, C. Crystallization of Zr-Based Amorphous Alloys in Laser Welding. Metals 2023, 13, 1283. Yan, S.; Song, C.; Huang, L.; Han, L.; Wang, C. Crystallization of Zr-Based Amorphous Alloys in Laser Welding. Metals 2023, 13, 1283.
Abstract
Crystallization often occurs in the laser welding of amorphous alloys, reducing the amorphous alloys’ properties. So, it is necessary to simulate the temperature field curve of the welding area by computer and then determine the power and laser moving speed of laser welding. In this paper, the temperature field curve of Zr41.2Ti13.8Cu12.5Ni10Be22.5(Vit1) amorphous alloy in laser welding is obtained by finite element analysis. The continuous heating curve (CHT) of Vit1 is fitted by the Vogel-Fulcher-Tammann (VFT) equation and the Kissinger equation. If the temperature field curve intersects with the CHT curve, crystallization occurs. The experiment results show that the VFT equation can be used to predict the crystallization of Vit1 better in laser welding. The tem-perature and welding time are increased by using low welding speed. Therefore, the temperature of the weld zone cannot fall in time, resulting intersection of the temperature field curve and the CHT curve. So, crystallization can be avoided if the welding speed is controlled within a rea-sonable range, and the highest temperature is kept under the CHT curve.
Keywords
amorphous alloy; finite element analysis; crystallization prediction; laser welding
Subject
Chemistry and Materials Science, Metals, Alloys and Metallurgy
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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