Mo(Si,Al)2-Al2O3 复合材料中相互竞争的高温变形机制

Metallurgical and Materials Transactions A Pub Date : 2024-07-23 DOI:10.1007/s11661-024-07520-7

Aina Edgren, Erik Ström, Magnus Hörnqvist Colliander

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引用次数: 0

摘要

Mo(Si,Al)2-Al2O3 复合材料在 1300 °C 下进行了四点弯曲测试。添加 Al2O3 会导致晶粒尺寸减小，从而降低材料的强度，Al2O3 的含量最高可达 15 wt pct。当 Al2O3 的比例较高时，晶粒尺寸的减小趋于饱和，由于 Al2O3 颗粒阻止了晶界滑动，因此强度得以恢复。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Competing High-Temperature Deformation Mechanisms in Mo(Si,Al)2–Al2O3 Composites

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Competing High-Temperature Deformation Mechanisms in Mo(Si,Al)2–Al2O3 Composites

Mo(Si,Al)₂–Al₂O₃ composites were tested in four-point bending at 1300 °C. The addition of Al₂O₃ led to a decrease in grain size, and a subsequent decrease in strength for materials containing up to 15 wt pct Al₂O₃. At higher Al₂O₃ fractions, the decrease in grain size saturates and the strength is recovered as the Al₂O₃ particles prevent grain boundary sliding.

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Metallurgical and Materials Transactions A

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