Refill friction stir spot welding (RFSSW): a review of processing, similar/dissimilar materials joining, mechanical properties and fracture mechanism

IF 2.5 2区材料科学 Journal of Iron and Steel Research International Pub Date : 2024-04-12 DOI:10.1007/s42243-024-01209-2

Yun-qiang Zhao, Hao-kun Yang, Aloshyn Andriia, Hong-hang Lo, Jia-xin Li

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Abstract

Refill friction stir spot welding (RFSSW) provides a novel method to join similar and/or dissimilar metallic materials without a key-hole in the center of the joint. Having the key-hole free characterization, the similar/dissimilar RFSSW joint exhibits remarkable and endurable characteristics, including high shear strength, long fatigue life, and strong corrosion resistance. In the meanwhile, as the key-hole free joint has different microstructures compared with conventional friction stir spot welding, thus the RFSSW joint shall possess different shear and fatigue fracture mechanisms, which needs further investigation. To explore the underlying failure mechanism, the similar/dissimilar metallic material joining parameters and pre-treatment, mechanical properties, as well as fracture mechanisms under this novel technology will be discussed. In details, the welding tool design, welding parameters setting, and the influence of processing on the lap shear and fatigue properties, as well as the corrosion resistance will be mainly discussed. Moreover, the roadmap of RFFSW is also discussed.

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填充式搅拌摩擦点焊（RFSSW）：加工、同类/异类材料连接、机械性能和断裂机理综述

填充式搅拌摩擦点焊（RFSSW）提供了一种连接相似和/或不相似金属材料的新方法，而无需在接头中心开键孔。具有无键孔特性的同类/异类 RFSSW 接头表现出显著的耐久性特征，包括剪切强度高、疲劳寿命长和耐腐蚀性强。同时，由于无键孔接头的微观结构与传统的搅拌摩擦点焊不同，因此 RFSSW 接头应具有不同的剪切和疲劳断裂机制，这需要进一步研究。为了探究其背后的失效机理，我们将讨论这种新型技术下类似/异种金属材料的连接参数和预处理、力学性能以及断裂机理。具体而言，将主要讨论焊接工具设计、焊接参数设置、加工过程对搭接剪切和疲劳性能以及耐腐蚀性能的影响。此外，还将讨论 RFFSW 的发展路线图。

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来源期刊

Journal of Iron and Steel Research International 工程技术-冶金工程

自引率

16.00%

发文量

161

审稿时长

2.8 months

期刊介绍： Publishes critically reviewed original research of archival significance Covers hydrometallurgy, pyrometallurgy, electrometallurgy, transport phenomena, process control, physical chemistry, solidification, mechanical working, solid state reactions, materials processing, and more Includes welding & joining, surface treatment, mathematical modeling, corrosion, wear and abrasion Journal of Iron and Steel Research International publishes original papers and occasional invited reviews on aspects of research and technology in the process metallurgy and metallic materials. Coverage emphasizes the relationships among the processing, structure and properties of metals, including advanced steel materials, superalloy, intermetallics, metallic functional materials, powder metallurgy, structural titanium alloy, composite steel materials, high entropy alloy, amorphous alloys, metallic nanomaterials, etc..