Enci Niu, Kunmin Zhang, Jun Tong, Sihui Ouyang, Aitao Tang, Xianhua Chen, Liying Qiao, Yong Wang, Jia She, Fusheng Pan
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Study on the microstructure and properties of AZ31 alloy by hot die forging extrusion
Mg−3.18Al−1.00Zn−0.06Mn(wt.%) (AZ31) alloy was fabricated through a combination of hot die forging at 300℃ and extrusion processes (HFE). Results demonstrate that the HFE process can accelerate dynamic recrystallization (DRX) and refine grains effectively while weakening the basal texture intensity. The highly uniform fine grain structure of the HFE sample was attributed to hot die forging treatment prior to extrusion, which facilitates the nucleation of recrystallization and improves the microstructure. After 60 s of hot die forging, the HFE sample exhibited promising mechanical properties. In particular, yield asymmetry ratio (σCYS/σTYS) improved significantly by 30%. This work provides a new research strategy for obtaining Mg alloys with high economic benefit and satisfactory comprehensive performance.
期刊介绍：
Journal of Materials Research (JMR) publishes the latest advances about the creation of new materials and materials with novel functionalities, fundamental understanding of processes that control the response of materials, and development of materials with significant performance improvements relative to state of the art materials. JMR welcomes papers that highlight novel processing techniques, the application and development of new analytical tools, and interpretation of fundamental materials science to achieve enhanced materials properties and uses. Materials research papers in the following topical areas are welcome.
• Novel materials discovery
• Electronic, photonic and magnetic materials
• Energy Conversion and storage materials
• New thermal and structural materials
• Soft materials
• Biomaterials and related topics
• Nanoscale science and technology
• Advances in materials characterization methods and techniques
• Computational materials science, modeling and theory
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