Work

Enhanced strength-ductility in Al-Zn-Mg-Cu alloy via additive friction stir deposition and heat treatment

Year: 2026

Type: article

Abstract: Overcoming the strength-ductility trade-off dilemma is paramount for advanced materials engineering. Herein, we prepared 7075 aluminium alloys with superior strength and ductility via additive friction stir deposition (AFSD) and subsequent heat treatment. Compared with the commercial base material, the heat-treated 7075 aluminium alloy maintained a high ultimate tensile strength of 556 MPa, while the uniform elongation increased from 12.2% to 26.7%, exhibiting the highest strength-ductility synergy reported among commercial Al-Zn-Mg-Cu alloy systems. Grain boundary sliding was activated via the equiaxed grains to accommodate substantial plastic strain. This method provides a promising and cost-effective pathway for developing strength-ductility on Al-Zn-Mg-Cu alloys.

Source: Materials Research Letters

DOI: 10.1080/21663831.2026.2651934

Authors: Zeyu Zhang, Long Wan, Yong Yang, Youlong Shi, Zhanwen Feng, Jinping Guan

Institution: Harbin Institute of Technology

Language: English

Topic: Aluminum Alloy Microstructure Properties

Subfield: Aerospace Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $1,459

Funders: Anhui Office of Philosophy and Social Science, Six Talent Peaks Project in Jiangsu Province