Achieving Simultaneous Enhancement of Strength and Ductility in Aluminum Matrix Composites Reinforced by Dual-Scale Hybrid Reinforcement via Friction Stir Processing.

Zikun Wang, Xianyong Zhu, Chen Wang, Xiong Xiao, Ke Zhang, Cheng Jiang, Jiaan Liu

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Article in Materials (Basel, Switzerland), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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7 authors.

Zikun WangSchool of Mechanical and Aerospace Engineering, Jilin University, Changchun 130022, China.

Xianyong ZhuSchool of Mechanical and Aerospace Engineering, Jilin University, Changchun 130022, China.ORCID 0000-0003-4917-4047

Chen WangSchool of Mechanical and Aerospace Engineering, Jilin University, Changchun 130022, China.

Xiong XiaoSchool of Mechanical and Aerospace Engineering, Jilin University, Changchun 130022, China.ORCID 0000-0001-8604-5223

Ke ZhangSchool of Mechanical and Aerospace Engineering, Jilin University, Changchun 130022, China.

Cheng JiangSchool of Mechanical and Aerospace Engineering, Jilin University, Changchun 130022, China.

Jiaan LiuCollege of Materials Science and Engineering, Jilin University, Changchun 130022, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Overcoming the strength-ductility trade-off in conventional aluminum matrix composites (AMCs) remains a significant challenge. This study employs dual-scale hybrid reinforcement particles comprising micron-sized Cu and nano-sized Ti, alongside bimodal micro-sized pure Al powders as matrix fillers. The AMCs were fabricated through ball milling (BM) combined with multi-pass friction stir processing (FSP). The homogenously distributed hybrid reinforcement particles generate an integrated composite region consisting of both coarse-grained (CG) and fine-grained (FG) structures, demonstrating enhanced material characteristics. The interwoven network of coarse- and fine-crystalline domains constructs a heterogeneous architecture that enables simultaneous improvement in both strength and ductility properties. The micron-Cu acts as a skeletal support within the matrix, enhancing load transfer efficiency and effectively hindering dislocation motion. The nano-Ti and in situ intermetallics facilitate grain refinement via the pinning effect and promote heterogeneous nucleation, which contributes to stress dispersion and dislocation obstruction. The addition of dual-scale micron-sized pure Al powder particles promotes the formation of the heterogeneous architecture, which enhances the balancing of strength and ductility in the composite. Following compositing (Al

Indexed as

aluminum matrix compositescopperdual-scale reinforcementfriction stir processingmicrostructuretitanium

Identifiers

PMID41157011

DOI10.3390/ma18204780

PMCPMC12565903

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