利用累积滚焊和退火技术制备Mg-Zn-Y-Ca合金的显微组织和力学性能

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Letters Pub Date : 2025-09-30 DOI:10.1016/j.matlet.2025.139590

Zhen-Feng Li , Hai-Long Jia , Ming Yang , De-Qing Ma , Min Zha

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引用次数: 0

摘要

本研究表明，累积轧制结合控制退火可以在稀Mg-Zn-Y-Ca合金中实现优异的强度-塑性平衡，即经ARB处理的Mg-1.8Zn-0.3Y-0.3Ca （wt%）合金在300°C下退火10 min后形成独特的弱四重织构和均匀的超细晶组织（平均晶粒尺寸为2.3 μm）。它具有显著的机械性能，屈服强度为~ 235 MPa，均匀伸长率为~ 13%，比传统的低合金MgZn合金有了显著的提高。显微组织分析表明，这种优异的性能源于晶粒细化和织构改性的协同作用。

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Tailoring microstructures and enhancing mechanical properties of a Mg-Zn-Y-Ca alloy by accumulative roll bonding and annealing

The present work demonstrates that accumulative roll bonding (ARB) combined with controlled annealing can achieve an exceptional strength-ductility balance in dilute Mg-Zn-Y-Ca alloys, i.e., a Mg-1.8Zn-0.3Y-0.3Ca (wt%) alloy processed by ARB and subsequent annealing at 300 °C for 10 min develops a unique weak quadruple texture and homogeneous ultrafine-grained microstructure (average grain size: 2.3 μm). It exhibits remarkable mechanical properties with a yield strength of ∼235 MPa and uniform elongation of ∼13 %—representing a significant improvement over conventional low-alloyed MgZn alloys. Microstructural analysis reveals that this superior performance stems from the synergistic effects of grain refinement and texture modification.

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来源期刊

Materials Letters 工程技术-材料科学：综合

CiteScore

5.60

自引率

3.30%

发文量

1948

审稿时长

50 days

期刊介绍： Materials Letters has an open access mirror journal Materials Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Materials Letters is dedicated to publishing novel, cutting edge reports of broad interest to the materials community. The journal provides a forum for materials scientists and engineers, physicists, and chemists to rapidly communicate on the most important topics in the field of materials. Contributions include, but are not limited to, a variety of topics such as: • Materials - Metals and alloys, amorphous solids, ceramics, composites, polymers, semiconductors • Applications - Structural, opto-electronic, magnetic, medical, MEMS, sensors, smart • Characterization - Analytical, microscopy, scanning probes, nanoscopic, optical, electrical, magnetic, acoustic, spectroscopic, diffraction • Novel Materials - Micro and nanostructures (nanowires, nanotubes, nanoparticles), nanocomposites, thin films, superlattices, quantum dots. • Processing - Crystal growth, thin film processing, sol-gel processing, mechanical processing, assembly, nanocrystalline processing. • Properties - Mechanical, magnetic, optical, electrical, ferroelectric, thermal, interfacial, transport, thermodynamic • Synthesis - Quenching, solid state, solidification, solution synthesis, vapor deposition, high pressure, explosive