Strengthening of Mg-Al-Zn-Mn alloy using SiC/Al nanocomposite extrusion

P. Emadi, B. Andilab, K. Borodianskiy, C. Ravindran

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

The use of lightweight alloys such as magnesium (Mg) is critical for achieving improved fuel efficiency and reduced emissions for automobiles, as well as increased range for electric vehicles. To promote their use in industry, in replacing iron-based alloys, their mechanical properties must be improved. This can be achieved through the addition of fine ceramic particles, producing metal matrix composites. One of the most promising alloys of Mg is Mg-Al-Zn-Mn alloy. The current work examined the influence of SiC nanoparticles on the microstructure and mechanical properties of Mg-Al-Zn-Mn alloy composites. The additives were prepared via the extrusion of aluminum powder combined with 60 nm SiC particles. The resultant grain refinement was indeed significant, with a 54 % reduction for the 0.02 wt% SiC addition level. In addition, a more uniform dispersion of the β-Mg17Al12 phase and fine spherical clusters of Mg2Si were observed using scanning electron microscopy. The favorable morphology of the Mg2Si intermetallics and the fine grain size resulted in an improvement in tensile strength of approximately 32 %. The enhancements in mechanical properties were attributed to the Hall-Petch mechanism. Thus, the SiC-containing composite materials may be effectively used for light-alloy strengthening, leading to increased use of Mg alloys in industry.

Original languageEnglish
Article number166243
JournalJournal of Alloys and Compounds
Volume922
DOIs
StatePublished - 20 Nov 2022
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2022 Elsevier B.V.

Funding

The authors are thankful to Mr. Michael Rinaldi, Mr. Timmy Ngo and the members of the Centre for Near-net-shape Processing of Materials (CNPM) at Toronto Metropolitan University (TMU) for their assistance with experiments. The authors are thankful for the technical support and expertise of Mr. Alan Machin and Mr. Qiang Li from TMU’s Department of Mechanical and Industrial Engineering. The authors would also like to acknowledge the financial support of the Natural Sciences and Engineering Research Council of Canada ( NSERC ), through Canada Graduate Scholarships to both Mr. Payam Emadi (CGSD3 - 535728 - 2019) and Mr. Bernoulli Andilab (CGSD3 - 559982 - 2021), and research grant RGPIN-06096 . The authors are thankful to Mr. Michael Rinaldi, Mr. Timmy Ngo and the members of the Centre for Near-net-shape Processing of Materials (CNPM) at Toronto Metropolitan University (TMU) for their assistance with experiments. The authors are thankful for the technical support and expertise of Mr. Alan Machin and Mr. Qiang Li from TMU's Department of Mechanical and Industrial Engineering. The authors would also like to acknowledge the financial support of the Natural Sciences and Engineering Research Council of Canada (NSERC), through Canada Graduate Scholarships to both Mr. Payam Emadi (CGSD3 - 535728 - 2019) and Mr. Bernoulli Andilab (CGSD3 - 559982 - 2021), and research grant RGPIN-06096.

FundersFunder number
Centre for Near-net-shape Processing of Materials
TMU's Department of Mechanical and Industrial Engineering
Natural Sciences and Engineering Research Council of Canada559982 - 2021, 535728 - 2019, RGPIN-06096
Tokyo Metropolitan University

    Keywords

    • Mechanical properties
    • Metals and alloys
    • Microstructure

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