Characterisation of structural modifications on cold-formed AA2024 substrates by wire arc additive manufacturing

IF 3.1 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Science and Technology of Welding and Joining Pub Date : 2022-12-31 DOI:10.1080/13621718.2022.2160902

Mathias Silmbroth, N. Enzinger, C. Schneider-Bröskamp, Aurel Arnoldt, T. Klein

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引用次数: 1

Abstract

Wire arc additive manufacturing, employing conventional fusion welding processes, shows excellent versatility and can therefore be used for structural modifications of existing parts to create hybrid components. This study evaluates the modification of cold-formed AA2024 metal sheets with 2xxx filler metals to produce 2xxx hybrid structures. The alloys are investigated by thermodynamic simulations and the solidification crack susceptibility is assessed by calculating the index for hot cracking susceptibility. Using cold metal transfer, single-layer depositions are generated on profile sheets after which the specimens are characterised by three analysis procedures: metallographic analysis, chemical analysis, and hardness testing. Results indicate that AA2024 wire material, although generally considered difficult to weld, is more suitable for the additive modification of AA2024 sheets and profiles, as crack-free specimens can be deposited on cold-formed substrates.

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线弧增材制造对冷成型AA2024基板结构改性的表征

采用传统熔焊工艺的电弧增材制造显示出优异的通用性，因此可用于现有零件的结构修改，以创建混合组件。本研究评估了用2xxx填充金属对冷成型AA2024金属板进行改性，以生产2xxx混合结构。通过热力学模拟对合金进行了研究，并通过计算热裂纹敏感性指数来评估凝固裂纹敏感性。使用冷金属转移，在型材上产生单层沉积，然后通过三种分析程序对试样进行表征：金相分析、化学分析和硬度测试。结果表明，AA2024线材虽然通常被认为很难焊接，但更适合对AA2024板材和型材进行添加剂改性，因为无裂纹试样可以沉积在冷成型基底上。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Science and Technology of Welding and Joining 工程技术-材料科学：综合

CiteScore

6.10

自引率

12.10%

发文量

审稿时长

1.7 months

期刊介绍： Science and Technology of Welding and Joining is an international peer-reviewed journal covering both the basic science and applied technology of welding and joining. Its comprehensive scope encompasses all welding and joining techniques (brazing, soldering, mechanical joining, etc.) and aspects such as characterisation of heat sources, mathematical modelling of transport phenomena, weld pool solidification, phase transformations in weldments, microstructure-property relationships, welding processes, weld sensing, control and automation, neural network applications, and joining of advanced materials, including plastics and composites.