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在老化过程中X85MnAl29-9钢的微观结构和质地演变

Małgorzata Witkowska¹, Kinga Chronowska-Przywara², Joanna Kowalska¹

¹Faculty of Metals Engineering and Industrial Computer Science, AGH University of Krakow, Av. Mickiewicza 30, 30-059 Krakow, Poland.

Materials (Basel, Switzerland)

|November 27, 2024

概括

高X85MnAl29-9钢的老化会影响硬度. 较短的老化时间增加了由于 κ κ 的硬度.

科学领域:

材料科学材料科学材料科学
金工业是金工业的一个方面.
物理金学物理金学

背景情况:

研究高合金,含含量各不相同的高合金 (21-31%).
专注于耐老化硬化的X85MnAl29-9钢,是一种高合金.
变形加工包括热冷 (30%的减少).

研究的目的:

在老化过程中分析X85MnAl29-9钢的微观结构和质地演变.
研究550°C的老化时间对材料性能的影响.
了解降水机制及其对硬度的影响.

主要方法:

在气氛下在550°C的温度下进行老化处理,随后进行空气冷却.
使用光显微镜,传输电子显微镜 (TEM) 和扫描电子显微镜 (SEM) 的微结构分析.
通过X射线衍射,纹理测量和微硬度测试进行相位分析.

主要成果:

在老化过程中,在奥氏体矩阵内的 κ'-碳化物和在粒边界的 κ-碳化物的沉.
长期老化后通过旋分解形成 (Fe, Mn) ₃AlC纳米碳化物.
硬度因 κ' 降水而随着老化时间的缩短 (24 小时) 增加;由于过度老化而随着老化时间的延长 (100 小时) 硬度下降.

结论:

老化时间显著影响X85MnAl29-9钢的沉行为和硬度.
脊柱分解机制是长期老化的合金中纳米碳化物形成的关键.
优化老化时间对于控制硬度和设计使用这种钢的安全系统至关重要.

关键词:

钢是一种钢.微观结构的微观结构纳米碳化物是一种纳米碳化物.螺旋分解的分解质地质地质地

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