探讨WZ21镁合金慢凝固和挤压的扭结强化

IF 15.8 1区材料科学 Q1 METALLURGY & METALLURGICAL ENGINEERING

Journal of Magnesium and Alloys Pub Date : 2025-04-05 DOI:10.1016/j.jma.2025.03.013

Drahomír Dvorský, Yoshihito Kawamura, Shin-Ichi Inoue, Soya Nishimoto, Jiří Kubásek, Anna Boukalová, Miroslav Čavojský, Luděk Heller, Jan Duchoň, Dalibor Vojtěch

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引用次数: 0

摘要

Mg-Y-Zn镁合金体系以长周期有序堆积相（LPSO）的存在而闻名，这种相可以用最少的合金元素提高强度和延展性。更好的改进与特定的微观结构有关，称为Mille-Feuille （MF）结构，这种合金在经过适当的热处理后也会出现。本研究系统地比较了传统的钢锭冶金方法和Bridgman方法（慢冷却），并结合不同的热处理和挤压工艺。微观分析揭示了LPSO相，MF结构，特别是晶粒尺寸的变化，导致机械和腐蚀性能的差异。布里奇曼方法令人惊讶地脱颖而出，确保卓越的机械性能，由于扭结和纹理强化。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Exploring kink strengthening in WZ21 magnesium alloy via slow solidification and extrusion

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Exploring kink strengthening in WZ21 magnesium alloy via slow solidification and extrusion

The Mg-Y-Zn magnesium alloy system is known for the presence of Long-Period Stacking Ordered (LPSO) phases that improves strength and ductility with minimal amounts of alloying elements. Even better improvements are associated with the specific microstructure known as the Mille-Feuille (MF) structure that can occur in this alloy as well after proper heat treatment. This study systematically compares the traditional ingot metallurgy method with the Bridgman method (slow cooling), coupled with diverse heat treatments and extrusion process. Microscopic analyses reveal variations in the presence of LPSO phases, MF structure, and especially grain size, leading to divergent mechanical and corrosion properties. The Bridgman approach surprisingly stands out, ensuring superior mechanical properties due to kink and texture strengthening.

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来源期刊

Journal of Magnesium and Alloys Engineering-Mechanics of Materials

CiteScore

20.20

自引率

14.80%

发文量

审稿时长

59 days

期刊介绍： The Journal of Magnesium and Alloys serves as a global platform for both theoretical and experimental studies in magnesium science and engineering. It welcomes submissions investigating various scientific and engineering factors impacting the metallurgy, processing, microstructure, properties, and applications of magnesium and alloys. The journal covers all aspects of magnesium and alloy research, including raw materials, alloy casting, extrusion and deformation, corrosion and surface treatment, joining and machining, simulation and modeling, microstructure evolution and mechanical properties, new alloy development, magnesium-based composites, bio-materials and energy materials, applications, and recycling.