What question did this study set out to answer?

The study investigates the specific impacts of aluminum (Al) and calcium (Ca) on the microstructure and mechanical performance of Mg–Al–Ca alloys during extrusion.

June 20, 2026MaterialsOpen Access

Unraveling the Distinct Roles of Al and Ca in Microstructure Evolution and Tensile Response of Extruded Mg–Al–Ca Alloys

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Authors

CCChen Chen YWYi-Xiang Wang YWYu Wang

Discussion

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Overview

This randomized trial reveals the roles of Al and Ca on microstructures and mechanical properties in Mg–Al–Ca alloys, suggesting pathways for better alloy design.

Key Points

The study investigates the specific impacts of aluminum (Al) and calcium (Ca) on the microstructure and mechanical performance of Mg–Al–Ca alloys during extrusion.
Alloys Mg–6Al–0.5Ca, Mg–9Al–0.5Ca, and Mg–9Al–1.3Ca were extruded at temperatures of 250 °C and 300 °C.
Quantitative analysis assessed microstructure evolution and mechanical properties post-extrusion.
Strengthening mechanisms were evaluated through grain refinement and dislocation obstruction calculations.
Mg–9Al–0.5Ca exhibited a yield strength of 338 ± 4 MPa and ultimate tensile strength of 396 ± 5 MPa with 8.7 ± 1.6% elongation after extrusion at 250 °C.
Increasing Al content enhanced f-Mg17Al12 formation, which refined dynamically recrystallized grains and contributed to Orowan strengthening.
Grain-boundary strengthening was the dominant contribution to the overall strength of the alloys.

Cite This Study

Chen et al. (2026) studied this question.

synapsesocial.com/papers/6a362e91db0793dc1a53646a https://doi.org/10.3390/ma19122638

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June 20, 2026MaterialsOpen Access

Unraveling the Distinct Roles of Al and Ca in Microstructure Evolution and Tensile Response of Extruded Mg–Al–Ca Alloys

View Full Paper

Ask AI

Bookmark

Authors

CCChen Chen YWYi-Xiang Wang YWYu Wang

Discussion

Member takes

Overview

This randomized trial reveals the roles of Al and Ca on microstructures and mechanical properties in Mg–Al–Ca alloys, suggesting pathways for better alloy design.

Key Points

The study investigates the specific impacts of aluminum (Al) and calcium (Ca) on the microstructure and mechanical performance of Mg–Al–Ca alloys during extrusion.
Alloys Mg–6Al–0.5Ca, Mg–9Al–0.5Ca, and Mg–9Al–1.3Ca were extruded at temperatures of 250 °C and 300 °C.
Quantitative analysis assessed microstructure evolution and mechanical properties post-extrusion.
Strengthening mechanisms were evaluated through grain refinement and dislocation obstruction calculations.
Mg–9Al–0.5Ca exhibited a yield strength of 338 ± 4 MPa and ultimate tensile strength of 396 ± 5 MPa with 8.7 ± 1.6% elongation after extrusion at 250 °C.
Increasing Al content enhanced f-Mg17Al12 formation, which refined dynamically recrystallized grains and contributed to Orowan strengthening.
Grain-boundary strengthening was the dominant contribution to the overall strength of the alloys.

Cite This Study

Chen et al. (2026) studied this question.

synapsesocial.com/papers/6a362e91db0793dc1a53646a https://doi.org/10.3390/ma19122638

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