冷却速度对镁合金微观结构和性能的影响--综述

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

Journal of Magnesium and Alloys Pub Date : 2024-08-01 DOI:10.1016/j.jma.2024.06.021

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引用次数: 0

摘要

镁合金是应用最广泛的轻质结构材料之一，开发高强度-高韧性镁合金是当前乃至未来的重要研究领域。镁合金的制备工艺参数直接影响镁合金的微观结构，进而决定镁合金的性能。冷却速率对镁合金的显微组织和性能有重要影响，是不可忽视的重要制备工艺参数。从液相到固相的冷却速率和镁合金热处理后的冷却速率都会改变镁合金的微观结构。此外，镁合金的性能也会受到影响。本文综述了冷却速度对凝固行为、流变行为、微观结构变化（合金元素在基体中的固溶，第二相的成分、尺寸、分布和形态，合金元素的扩散和偏析，晶粒尺寸，枝晶的形成和形态等）的影响，以及热处理后镁合金的冷却速度对微观结构和应力分布的影响。详细分析了冷却速率对镁合金微观结构影响存在分歧的原因。还深入分析和讨论了冷却速率对镁合金机械性能、耐腐蚀性和抗氧化性的影响。最后，展望了研究冷却速率对镁合金微观结构和性能影响的新方法和新途径。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Effects of cooling rate on the microstructure and properties of magnesium alloy-a review

查看原文本刊更多论文

Effects of cooling rate on the microstructure and properties of magnesium alloy-a review

Magnesium alloy is one of the most widely used lightweight structural materials, and the development of high strength-toughness magnesium alloy is an important research field at present and even in the future. The preparation process parameters of magnesium alloy directly affect the microstructure of the magnesium alloy, and then determine the properties of the magnesium alloy. The cooling rate has important effects on the microstructure and properties of the magnesium alloy, and is an important preparation process parameter that cannot be ignored. Both the cooling rate from liquid phase to solid phase and the cooling rate of the magnesium alloy after heat treatment will change the microstructure of the magnesium alloy. Furthermore, the properties of magnesium alloy will be affected. In this paper, the effects of cooling rate on the solidification behavior, the rheological behavior, the change of microstructure (the solid solution of alloying elements in matrix, the composition, size, distribution and morphology of second phase, the diffusion and segregation of alloying elements, the grain size, the formation and morphology of dendrite, etc.), and the effects of cooling rate of magnesium alloy after heat treatment on the microstructure and stress distribution are reviewed. The reasons for the divergence about the influence of cooling rate on the microstructure of magnesium alloy are analyzed in detail. The effects of cooling rate on the mechanical properties, corrosion resistance and oxidation resistance of magnesium alloy are also analyzed and discussed deeply. Finally, the new methods and approaches to study the effects of cooling rate on the microstructure and properties of magnesium alloy are prospected.

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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.