Deformation behavior of Ti2AlC particles in aluminum matrix composites characterized by electron backscatter diffraction

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Letters Pub Date : 2025-02-01 DOI:10.1016/j.matlet.2025.138171

Yue Sun , Gaohui Wu

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引用次数: 0

Abstract

The Al matrix composite reinforced by deformed Ti₂AlC particles was fabricated using spark plasma sintering, demonstrating high yield strength and plasticity. The evolution of microstructure, texture and Schmid factor (SF) was investigated by ex-situ electron backscatter diffraction (EBSD) to explore the deformation behavior of Ti₂AlC. The Kernel average misorientation (KAM) maps show that large plastic deformation is mainly concentrated in Ti₂AlC, which promotes the generation of geometrically necessary dislocations (GNDs). As the strain increases, the GND density gradually increases, accompanied by further enhancement of the basal texture of Ti₂AlC (0001). The statistical results of SF indicate that the proportion of high SF in Ti₂AlC significantly increases after deformation, which is more conducive to the activation of slip systems. Therefore, compared with composites reinforced by non-deformable particles, Ti₂AlC dominates the deformation of the composite, especially promoting the enhancement of texture and the improvement of SF during the deformation process.

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来源期刊

Materials Letters 工程技术-材料科学：综合

CiteScore

5.60

自引率

3.30%

发文量

1948

审稿时长

50 days

期刊介绍： Materials Letters has an open access mirror journal Materials Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Materials Letters is dedicated to publishing novel, cutting edge reports of broad interest to the materials community. The journal provides a forum for materials scientists and engineers, physicists, and chemists to rapidly communicate on the most important topics in the field of materials. Contributions include, but are not limited to, a variety of topics such as: • Materials - Metals and alloys, amorphous solids, ceramics, composites, polymers, semiconductors • Applications - Structural, opto-electronic, magnetic, medical, MEMS, sensors, smart • Characterization - Analytical, microscopy, scanning probes, nanoscopic, optical, electrical, magnetic, acoustic, spectroscopic, diffraction • Novel Materials - Micro and nanostructures (nanowires, nanotubes, nanoparticles), nanocomposites, thin films, superlattices, quantum dots. • Processing - Crystal growth, thin film processing, sol-gel processing, mechanical processing, assembly, nanocrystalline processing. • Properties - Mechanical, magnetic, optical, electrical, ferroelectric, thermal, interfacial, transport, thermodynamic • Synthesis - Quenching, solid state, solidification, solution synthesis, vapor deposition, high pressure, explosive