Dislocation Transformations at the Common 30°〈0001〉 Grain Boundaries During Plastic Deformation in Magnesium.

Yulong Zhu, Yaowu Sun, An Huang, Fangxi Wang, Peng Chen

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Article in Nanomaterials (Basel, Switzerland), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

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5 authors.

Yulong ZhuKey Laboratory of Automobile Materials of Ministry of Education & School of Materials Science and Engineering, Jilin University, Changchun 130025, China.

Yaowu SunKey Laboratory of Automobile Materials of Ministry of Education & School of Materials Science and Engineering, Jilin University, Changchun 130025, China.

An HuangKey Laboratory of Automobile Materials of Ministry of Education & School of Materials Science and Engineering, Jilin University, Changchun 130025, China.

Fangxi WangDepartment of Chemical Engineering, Virginia Tech, Blacksburg, VA 24060, USA.ORCID 0000-0001-8365-0380

Peng ChenKey Laboratory of Automobile Materials of Ministry of Education & School of Materials Science and Engineering, Jilin University, Changchun 130025, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

After the thermal-mechanical processing of Mg alloys, extensive 30°⟨0001⟩ grain boundaries (GBs) are present in the recrystallized structure, which strongly affects the mechanical properties via interactions with lattice dislocations. In this work, we systematically investigate how the 30°⟨0001⟩ GBs influence the slip transmission during plastic deformation. We reveal that basal dislocations can be transmuted into its neighboring grain and continue gliding on the basal plane. The prismatic dislocation can transmit the GB remaining on the same Burgers vector. However, a mobile pyramidal c+a dislocation can be absorbed at GBs, initiating the formation of new grain. These findings provide a comprehensive understanding on GB-dislocation interaction in hexagonal close-packed (HCP) metals.

Indexed as

atomistic simulationsgrain boundarymagnesium alloyslip transfer

Identifiers

PMID39940208

DOI10.3390/nano15030232

PMCPMC11819990

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