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精细粒度多元元素AlCoxCrFeNi (x = 1, 0.75, 0.5) 合金的生产和表征,用于高温应用

Khaja Naib Rasool Shaik¹, Mauro Bortolotti¹, Iñaki Leizaola²

¹Department of Industrial Engineering, University of Trento, 38122 Trento, Italy.

Materials (Basel, Switzerland)

|October 16, 2024

概括

这项研究使用机械削和火花等离子体烧结生产了新的AlCoCrFeNi合金. 含有较少的合金表现出优越的抗氧化能力,使其适用于高温应用.

科学领域:

材料科学材料科学材料科学
金工业是一种金工业.
高的合金高的合金

背景情况:

高合金 (HEAs) 为要求高的应用提供了独特的特性.
控制微观结构和氧化行为对于HEA性能至关重要.
AlCoCrFeNi合金是一个有前途的HEAs类.

研究的目的:

为了合成和描述AlCoCrFeNi (x = 1, 0.75, 0.5) 合金.
调查含量对微观结构,机械性能和氧化抵抗的影响.
评估这些合金在高温结构应用中的潜力.

主要方法:

粉末金方法涉及机械削.
使用火花等离子烧结 (SPS) 巩固密集的微观结构.
微结构,机械和热重力测量分析 (TGA) 用于表征.

主要成果:

获得无孔AlCoCrFeNi合金样本,具有精细,均的微观结构.
从大气氧气暴露中观察到现场氧化物颗粒的形成,作为强化剂.
证明,降低含量可以通过密集的Al2O3形成来增强氧化保护.

结论:

火花等离子烧结对于生产密集的AlCoCrFeNi合金是非常有效的.
由于增强的Al2O3层形成,随着含量下降,氧化阻力得到改善.
低AlCoCrFeNi合金显示出用于高温结构用途的巨大潜力.

关键词:

这是一种AlCoCrFeNiNi.高合金的高合金.氧化过程中的氧化.

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