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首页> 外文期刊>Advances in materials science and engineering >Effect of Heat Treatment and Titanium Addition on the Microstructure and Mechanical Properties of Cast Fe31Mn28 Ni15Al24.5Tix High-Entropy Alloys
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Effect of Heat Treatment and Titanium Addition on the Microstructure and Mechanical Properties of Cast Fe31Mn28 Ni15Al24.5Tix High-Entropy Alloys

机译：热处理和钛的影响对铸Fe31MN28NI15A24.5TIX高熵合金的微观结构和力学性能

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摘要

High-entropy alloys (HEAs) are multiprincipal element alloys with controllable properties. Studying the mechanical properties of these alloys and relating them to their microstructures is of interest. In the current investigation, Fe31Mn28 Ni15Al24.5Tix high-entropy alloys with Ti content (0–3?wt.%) were prepared by casting in an induction furnace. Different heat treatments were applied, and the microstructure and hardness of the cast samples were studied. It was observed that addition of up to 3.0 wt.% Ti significantly increases the hardness of the alloy from 300 to 500 (Hv) by the combined effect of solid solution strengthening and via decreasing lamellar spacing. Heat treatment at 900°C for 10?h enhanced the hardness at lower Ti percentages (0.0–0.8 wt.%) by decreasing the lamellar spacing, while no change was observed at higher Ti content. It was also observed that extending the treatment time to 20?h affected negatively the hardness of the alloy. Concluding, HEAs can achieve high hardness using low-cost principle elements with minor alloying additives compared to the other traditional alloys.
机译：高熵合金（HEAS）是具有可控性质的多丙烯元件合金。研究这些合金的机械性能并将它们与其微观结构相关的感兴趣。在本电流研究中，通过在感应炉中浇铸来制备具有Ti含量的Fe31MN28 Ni15A124.5Tix高熵合金（0-3·wt.％）。应用了不同的热处理，研究了铸造样品的微观结构和硬度。观察到，通过固体溶液强化和通过降低的层间距的组合效果，加入高达3.0wt％的Ti显着增加了合金从300至500（HV）的硬度。通过降低层间距，在900℃下热处理10μl10≤10Ωh，增强了较低Ti百分比（0.0-0.8重量％）的硬度，同时在较高的Ti含量下没有观察到变化。还观察到，将治疗时间延伸至20μl，影响合金的硬度。结论，与其他传统合金相比，SEE可以使用低成本原理元素来实现高成本的原理元素，与次要合金化添加剂相比。

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