Microstructure, Texture, and Tensile Properties of Mg-3Li Alloy Extruded at Different Temperatures

The Mg-3Li alloy has been extruded at different temperatures (extrusion temperatures of 240°C, 270°C, 300°C, 330°C, 370°C) and the microstructure, texture and tensile properties of the extruded sheet are investigated. Results show that the average grain size increases, the basal texture weakens with...

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Bibliographic Details
Published in:Journal of materials engineering and performance 2022-07, Vol.31 (7), p.5782-5789
Main Authors: Zhao, Jun, Jiang, Bingchun, Dai, Zuocai, Lu, Liwei
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Chemistry and Materials Science
Corrosion and Coatings
Engineering Design
Materials Science
Quality Control
Reliability
Safety and Risk
Technical Article
Tribology
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Summary:The Mg-3Li alloy has been extruded at different temperatures (extrusion temperatures of 240°C, 270°C, 300°C, 330°C, 370°C) and the microstructure, texture and tensile properties of the extruded sheet are investigated. Results show that the average grain size increases, the basal texture weakens with the increase of extrusion temperature and the development of a transverse direction (TD)-split texture. The highest grain size, the weakest basal texture and the strongest TD-split texture are developed in the alloy extruded at 370°C. This may be associated with enhancement of prismatic slip activity. The alloy extruded at 240°C exhibits the highest yield strength because of the fine grain structure and strong basal texture. The alloy extruded at 370°C in tension along the TD has the highest ductility, which is associated with the weakened basal texture and the formation of a TD-split texture.
ISSN:1059-9495
1544-1024
DOI:10.1007/s11665-022-06625-7