Fe–Al intermetallic suppression of dissimilar RSW joints using stainless-steel interlayers

IF 2.9 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Science and Technology of Welding and Joining Pub Date : 2023-02-23 DOI:10.1080/13621718.2023.2176046

Bryan Lara, R. Giorjão, H. Ghassemi-Armaki, A. Ramirez

引用次数: 1

Abstract

Austenitic and ferritic stainless-steel interlayers for resistance spot welding of an AlSi-coated 2000MPa UTS press-hardened boron steel and a 6022-T4 aluminium alloy were investigated to improve joint performance. CALPHAD and kinetic-based simulations were explored to determine the effects of Cr on the formation of Fe–Al intermetallic compounds. Selected area diffraction reveals the formation of FeCrAl9 along the interlayer-Al interface and suppresses the formation of FeAl3. The implementation of stainless-steel interlayers significantly improved the mechanical performance of the joint, with the 430 foil condition experiencing a substantial decrease in the Fe–Al intermetallic.

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使用不锈钢夹层抑制异种RSW接头的Fe–Al金属间化合物

采用奥氏体和铁素体不锈钢为中间体，对alsi涂层2000MPa UTS压硬化硼钢与6022-T4铝合金的电阻点焊进行了研究。研究了CALPHAD和动力学模拟，以确定Cr对Fe-Al金属间化合物形成的影响。选择区衍射显示feal9沿层间al界面形成，并抑制FeAl3的形成。在430箔条件下，Fe-Al金属间质的含量显著降低，不锈钢夹层的加入显著提高了接头的力学性能。

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.