Effect of Rotating Magnetic Field on the Microstructure and Shear Property of Al/Steel Bimetallic Composite by Compound Casting

IF 2.9 2区材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING

Acta Metallurgica Sinica-English Letters Pub Date : 2025-01-03 DOI:10.1007/s40195-024-01802-0

Weize Lv, Guowei Zhang, Heqian Song, Dan Zhang, Shiyuan Liu, Hong Xu

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Abstract

Al/steel bimetallic composites were prepared by compound casting, and the effects of the rotating magnetic field on the interfacial microstructure and shear property of bimetallic composite was investigated. The application of rotating magnetic field refined the grain structure of the Al alloy matrix, changed the eutectic Si morphology from coarse lath to needle-like. The rotating magnetic field improved the temperature field and solute distribution of the Al alloy melt, enriched a layer of Si at the interface, and suppressed the growth of intermetallic compounds, the thickness of the interface layer decreased from 44.9 μm to 22.8 μm. The interfacial intermetallic compounds consisted of η-Al₅Fe₂, θ-Al₁₃Fe₄, τ₆-Al_4.5FeSi, τ₅-Al₈Fe₂Si and τ₃-Al₂FeSi, and the addition of the rotating magnetic field did not change phase composition. The rotating magnetic field improved the stress distribution within the interfacial intermetallic compounds, the presence of high-angle grain boundaries retarded crack extension, and the shear strength was enhanced from 31.27 ± 3 MPa to 52.70 ± 4 MPa. This work provides a feasible method for preparing Al/steel bimetallic composite with good bonding property.

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来源期刊

Acta Metallurgica Sinica-English Letters METALLURGY & METALLURGICAL ENGINEERING-

CiteScore

6.60

自引率

14.30%

发文量

122

审稿时长

2 months

期刊介绍： This international journal presents compact reports of significant, original and timely research reflecting progress in metallurgy, materials science and engineering, including materials physics, physical metallurgy, and process metallurgy.