Journal of Alloys and Compounds2022，Vol.9128.DOI:10.1016/j.jallcom.2022.165195

Phase formation, microhardness and magnetic properties of FeNiCrV-TiNb, (NiCoFeCuMn)3(AlTi) and (FeNiCoCrMn)(MoCr) high entropy intermetallic compounds

Moghaddam, Ahmad Ostovari Mikhailov, Dmitry Fereidonnejad, Rahele Shaburova, Nataliya Vinnik, Denis Uchaev, Daniil Bai, Fu-Quan Janas, Dawid Trofimov, Evgeny
Journal of Alloys and Compounds2022，Vol.9128.DOI:10.1016/j.jallcom.2022.165195
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  • NSTL
  • Elsevier

Phase formation, microhardness and magnetic properties of FeNiCrV-TiNb, (NiCoFeCuMn)3(AlTi) and (FeNiCoCrMn)(MoCr) high entropy intermetallic compounds

Moghaddam, Ahmad Ostovari 1Mikhailov, Dmitry 1Fereidonnejad, Rahele 1Shaburova, Nataliya 1Vinnik, Denis 1Uchaev, Daniil 1Bai, Fu-Quan 2Janas, Dawid 3Trofimov, Evgeny1
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作者信息

  • 1. South Ural State Univ
  • 2. Jilin Univ
  • 3. Silesian Tech Univ
  • 折叠

Abstract

High entropy intermetallic compounds (HEICs) are the most recent poster child of high entropy materials (HEMs), which provide a new paradigm to develop novel materials with potentially unusual properties. Here, FeNiCrV-TiNb, (Ni1/5-Co1/5-Fe1/5-Cu1/5-Mn1/5)3(Al1/2-Ti1/2), and (Fe1/5Ni1/5Co1/5Cr1/5Mn1/5)(Mo1/2Cr1/2) HEICs were fabricated by melting technique. The as-cast FeNiCrV-TiNb exhibited C14 Laves structure with varying chemical composition, which probably consists of two sub-lattices with slightly different lattice parameters. (Fe0.2Ni0.2Co0.2Cr0.2Mn0.2)(Mo0.5Cr0.5) crystalized into a single sigma-phase and revealed a homogenous microstructure with negligible segregation. A two-phase B2 +D03 structure with clear segregation of Cu, Fe, and Mn was obtained for (Ni0.2Co0.2Fe0.2Cu0.2Mn0.2)3(Al0.5Ti0.5) HEIC. The microhardness values were 915 Hv, 593 Hv, and 1051 Hv for FeNiCrV-TiNb, (Ni0.2Co0.2Fe0.2Cu0.2Mn0.2)3(Al0.5Ti0.5) and (Fe0.2Ni0.2Co0.2Cr0.2Mn0.2)(Mo0.5Cr0.5) HEICs, respectively. The last one is the highest value reported for an as-cast metallic HEM. (Ni0.2Co0.2Fe0.2Cu0.2Mn0.2)3(Al0.5Ti0.5) exhibited a soft magnetic behavior with a saturation magnetization of 27.7 emu/g and coercivity of ~ 311 Oe at 300 K, while FeNiCrV-TiNb and (Fe0.2Ni0.2Co0.2Cr0.2Mn0.2)(Mo0.5Cr0.5) showed an approximately linear dependency of magnetization vs. magnetic field. Finally, two modified parameters are introduced to expedite the discovery of new singlephase HEICs.

Key words

High entropy intermetallic compounds/Microstructure/Microhardness/Magnetic properties/SINGLE-PHASE/ALLOYS/CR

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出版年

2022
Journal of Alloys and Compounds

Journal of Alloys and Compounds

EISCI
ISSN：0925-8388
被引量12
参考文献量36
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