Work

Comparison of Mechanical and Corrosion Properties Between Coarse-Grained and Ultrafine-Grained High-Strength Aluminum Alloys

Year: 2026

Type: article

Abstract: Multi-axial forging (MAF) and aging were employed to process a high-strength aluminum alloy. The tensile properties, microstructure, and corrosion behavior were researched. After MAF, the strength of the alloy was observably increased, but the elongation was decreased. The strengthening mechanism resulted from dislocation multiplication and grain size reduction. After aging, strength was enhanced further, and elongation was improved. The strength and elongation are 561 MPa and 12.3%. Moreover, the corrosion resistance was obviously enhanced. The further strengthening is mainly attributed to the precipitation strengthening. The larger size and discontinuous distribution of grain boundary precipitates resulted in the alloy having higher corrosion resistance.

Source: Materials

DOI: 10.3390/ma19020407

Authors: Xiaolian Zhao, Yiwen Shao, Guoxiang Xu, Tong Liu, Dong Liu, Guoqiang Lin

Institution: Guangxi University

Language: English

Topic: Aluminum Alloy Microstructure Properties

Subfield: Aerospace Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $3,137

Funder: Guangxi Key Research and Development Program