Formation of icosahedral quasicrystals embedded in an Al-FCC matrix, in a novel Al–Cu–Fe–Cr alloy, after laser remelting

IF 3.5 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Materials Science Pub Date : 2024-12-03 DOI:10.1007/s10853-024-10495-w

A. V. Rodrigues, A. F. Ramirez, G. Zepon, J. B. Fogagnolo, W. Wolf

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引用次数: 0

Abstract

In this work an Al₉₀Cu₄Fe₂Cr₄ spray-formed alloy, originally consisting of an α-Al matrix with two crystalline intermetallic phases, Al₁₃Cr₂ and λ-Al₁₃Fe₄, was subjected to laser surface remelting. Different sets of parameters, including combinations of laser power, table displacement speed and laser beam diameter, were used. The laser track with the best combination of track geometry and microstructural refinement was selected for a detailed microstructural characterization, using transmission electron microscopy coupled with diffraction analysis. The mechanical properties were assessed by dynamic indentation tests. The surface remelted sample showed a microstructure consisting of refined icosahedral quasicrystals, with average dispersoid size below 1 μm, embedded in an Al-FCC matrix. This is the first time quasicrystal formation is reported for this composition. Additionally, the laser remelted material presented a substantial increase in the microhardness value compared to the substrate, from 167 to 205 kgf/mm².

Graphical abstract

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来源期刊

Journal of Materials Science 工程技术-材料科学：综合

CiteScore

7.90

自引率

4.40%

发文量

1297

审稿时长

2.4 months

期刊介绍： The Journal of Materials Science publishes reviews, full-length papers, and short Communications recording original research results on, or techniques for studying the relationship between structure, properties, and uses of materials. The subjects are seen from international and interdisciplinary perspectives covering areas including metals, ceramics, glasses, polymers, electrical materials, composite materials, fibers, nanostructured materials, nanocomposites, and biological and biomedical materials. The Journal of Materials Science is now firmly established as the leading source of primary communication for scientists investigating the structure and properties of all engineering materials.