Strength and ductility synergy in Mg-11Al alloys via Sc-microalloyed dual-wire arc additive manufacturing

Materials Research Letters 2026 Open access

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Authors: Xiangyang Yuan, Shengjie Han, Lu Han, Shuang Li, Bing-Qiang Wei, Si-Yuan Guo, Kai Zhang, Baiyu Wang, Zhang-Ting Hu, Hui-Yuan Wang
DOI: 10.1080/21663831.2025.2611737
Cited by: 6
References: 30

Abstract

A dual-wire arc additive manufacturing (WAAM) strategy via in-situ alloying of AZ71 and Al-2Sc wires was proposed to fabricate a Mg-10.6Al-0.4Zn-0.2Mn-0.05Sc alloy, overcoming the limitation of wire fabrication and achieving synergistic improvement in strength and ductility. After heat treatment, the alloy achieves a yield strength ≥200 MPa with elongation ≥5.2%. In-situ formed Al8Mn4Sc acted as heterogeneous nuclei, refining the β-Mg17Al12 and enhancing its dissolution kinetics, thereby improving the ductility. Meanwhile, high Al solubility promotes the precipitation of high-density non-basal β-Mg17Al12 and strengthens the alloy. This work offers a novel methodology for producing high-performance WAAM Mg alloys.

Fields of Study & Subjects

Magnesium Alloys: Properties and Applications Advanced Welding Techniques Analysis Additive Manufacturing Materials and Processes

Publication details

Journal / source
Materials Research Letters
Publisher
Informa UK Limited
Volume
14
Issue
3
Pages
240–249
Publication date
29 January 2026
Language
EN