Work

Achieving simultaneous improvement in strength and ductility in Al–Si–Mg–Ce alloy through synergistic morphology modification of eutectic (Si) and Al2Si2Ce phases by Sr addition

Year: 2024

Type: article

Abstract: In this paper, it was found for the first time that with Sr addition in Al–Si–Mg–Ce alloy, the morphology of eutectic (Si) can be modified from branch to fine fibrous, while the bulk-like Al 2 Si 2 Ce phase may replace the elongated needle-like one. Moreover, Mg was observed to segregate along the (Al)/Al 2 Si 2 Ce interface and Sr was found to concentrate in the interior of Al 2 Si 2 Ce phase. Such heterostructured Sr–Al 2 Si 2 Ce was also supported by first-principles calculations. The synergistic morphology modification of eutectic (Si) and Al 2 Si 2 Ce phases by Sr addition stimulated the simultaneous improvement in strength and ductility in Al–Si–Mg–Ce alloy.

Source: Journal of Materials Research and Technology

DOI: 10.1016/j.jmrt.2024.09.108

Authors: Lingyang Zeng, Yancheng Jin, Jianbao Gao, Wang Yi, Li Chen, Lijun Zhang

Institutions: Central South University, State Key Laboratory of Powder Metallurgy, State Key Laboratory of Materials Processing and Die & Mould Technology, Huazhong University of Science and Technology

Language: English

Topic: Aluminum Alloy Microstructure Properties

Subfield: Aerospace Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $1,430

OpenAlex ID: W4402696759

FWCI: 1.923

Cites: 35

Cited by: 11

Related to: 10