LPSO 相对不锈钢 Mg-Y-Al 合金高温氧化的影响

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

Journal of Magnesium and Alloys Pub Date : 2024-10-01 DOI:10.1016/j.jma.2024.07.009

Zhipeng Wang , Zhao Shen , Yang Liu , Yahuan Zhao , Qingchun Zhu , Yiwen Chen , Jingya Wang , Yangxin Li , Sergio Lozano-Perez , Xiaoqin Zeng

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引用次数: 0

摘要

在本研究中，我们研究了 Mg-11Y-1Al 合金在 500 °C 的 Ar-20%O2 环境中的氧化过程。多尺度分析表明，网络状长周期堆积有序相（LPSO）转变为针状 LPSO 和多边形 Mg24Y5 相，从而在氧化前沿形成了高密度的针状氧化物网络。这些氧化物沿着氧化物/基质界面横向生长，形成较厚的连续鳞片，有效地阻止了元素的扩散。因此，沿针状 LPSO 的优先氧化作用被认为可加速形成更厚的连续氧化鳞片，从而进一步提高 Mg-11Y-1Al 合金的抗氧化性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

The effect of LPSO phase on the high-temperature oxidation of a stainless Mg-Y-Al alloy

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The effect of LPSO phase on the high-temperature oxidation of a stainless Mg-Y-Al alloy

In this study, we investigated the oxidation of the Mg-11Y-1Al alloy at 500 °C in an Ar-20%O₂ environment. Multiscale analysis showed the network-like long-period stacking ordered (LPSO) phase transformed into needle-like LPSO and polygonal Mg₂₄Y₅ phases, leading to the formation of a high-dense network of needle-like oxides at the oxidation front. These oxides grew laterally along the oxide/matrix interfaces, forming a thicker, continuous scale that effectively blocked elemental diffusion. Hence, the preferential oxidation along the needle-like LPSO is believed to accelerate the formation of a thicker and continuous oxide scale, further improving the oxidation resistance of the Mg-11Y-1Al alloy.

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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.