FeAlCrNiV 欧特克复杂缩合金的结构和机械性能
Josef Pešička1, Jozef Veselý1, Robert Král1
1Department of Physics of Materials, Charles University, 12116 Prague, Czech Republic.
Materials (Basel, Switzerland)
|August 14, 2025
概括
这项研究研究了FeAlCrNiV复杂缩合金 (CCA),揭示了稳定的微观结构和特殊的高温机械性能. 这种合金表现出了显著的强度和可塑性,使其适合苛刻的应用.
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.
- 物理化学 物理化学
背景情况:
- 复杂缩合金 (CCA) 由于其多元素组成,具有独特的特性.
- 了解微观结构稳定性和在高温下机械行为对于先进的材料应用至关重要.
研究的目的:
- 为了研究FeAlCrNiV CCA的微观结构和机械性能,在造和化状态下.
- 为了评估长时间在800°C火后的微观结构稳定性和相位演变.
- 为了确定高温机械性能,包括屈服应力和可塑性.
主要方法:
- 作为造和烧焦的FeAlCrNiV CCA的微结构分析.
- 差分扫描热度计 (DSC) 和扩度计用于热反应分析.
- 压缩变形试验在从室温到800°C的温度范围内进行.
主要成果:
- 微观结构保持稳定,即使在800°C的16天内,也没有显示出造和化状态之间的显著差异.
- 两种状态都表现出一种性结构,包括一个以身体为中心的立方体 (bcc) 固体溶液和一个有序的B2阶段,具有结晶学上连贯的特征.
- 在高温下观察到异常的收益应力 (820MPa在800°C) 和优异的可塑性 (25%).
结论:
- FeAlCrNiV CCA表现出了显著的微观结构稳定性和相位连贯性.
- 合金具有出色的高温机械性能,其特点是高强度和显著的可塑性.
- 这些发现表明FeAlCrNiV CCA是高温结构应用的有希望的候选者.
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