纯Mg和AZ31合金与钢超声焊接的合金添加依赖键合机制

IF 4.7 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY Materials Chemistry and Physics Pub Date : 2025-04-01 Epub Date: 2025-02-07 DOI:10.1016/j.matchemphys.2025.130516

Yun-Ta Chung , Zehao Li , Jhe-Yu Lin

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引用次数: 0

摘要

本文研究了超声波焊接中Al对镁/钢界面结合机制的影响。在纯镁/钢界面，簇状氧化物破坏了金属与金属之间的直接接触，损害了键的完整性。相比之下，AZ31B镁合金/钢界面显示出纳米级Fe-Al金属间化合物（IMCs）的连续形成，促进了键的内聚和集成。结合机制的差异提高了峰值界面强度，从954 N增加到1794 N，几乎增加了一倍。这一发现揭示了Al在Mg中与Fe反应促进IMC的形成，加强Mg/钢接头USW界面的关键作用。

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Alloying addition-dependent bonding mechanisms in ultrasonic welding of pure Mg and AZ31 alloy to steel

This study examines how Al presence in magnesium alloys affects the bonding mechanism at the magnesium/steel interface in ultrasonic welding (USW). At the pure magnesium/steel interface, clustered oxides disrupt direct metal-to-metal contact, impairing bond integrity. In contrast, the AZ31B Mg alloy/steel interface demonstrated the continuous formation of nanoscale Fe–Al intermetallic compounds (IMCs), facilitating a cohesive and integrated bond. The difference in bonding mechanism enhanced the peak interfacial strength, which nearly doubled from 954 N to 1794 N. This finding unveiled the critical role of Al in Mg to react with Fe in promoting the formation of IMC, strengthening the interface in the USW of Mg/steel joints.

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来源期刊

Materials Chemistry and Physics 工程技术-材料科学：综合

CiteScore

8.70

自引率

4.30%

发文量

1515

审稿时长

69 days

期刊介绍： Materials Chemistry and Physics is devoted to short communications, full-length research papers and feature articles on interrelationships among structure, properties, processing and performance of materials. The Editors welcome manuscripts on thin films, surface and interface science, materials degradation and reliability, metallurgy, semiconductors and optoelectronic materials, fine ceramics, magnetics, superconductors, specialty polymers, nano-materials and composite materials.