Work

Achieving strength-ductility synergy in nano-particle/Al composites by activating stacking faults to alleviate interfacial stress concentration

Year: 2025

Type: article

Abstract: In aluminum matrix composites, stress concentration caused by dislocation pile-up between reinforcement and matrix during deformation is the primary reason for failure and fracture. Here, we utilized the high interfacial shear stress induced by dense uniformly distributed nanoparticles to activate nano-scale stacking faults (SFs) during deformation. The generation of SFs effectively alleviated stress concentration between the reinforcement and the matrix in the early stages of plastic deformation, while further enhancing the strain hardening capacity of the composites through interactions in subsequent deformation processes. This study proposed a new strategy of regulating deformation by using SFs in aluminum matrix composite.

Source: Materials Research Letters

DOI: 10.1080/21663831.2025.2551779

Authors: Xuefan Pan, Zunyan Xu, Yanzhi Peng, Jun Tan, Jianhong Yi, Caiju Li

Institutions: Kunming University of Science and Technology, Chongqing University

Language: English

Topic: Aluminum Alloys Composites Properties

Subfield: Mechanical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $1,459

Funders: National Natural Science Foundation of China, Suzhou Key Industrial Technology Innovation Project, Major Scientific and Technological Project of Zhejiang Province