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Microstructure And Corrosion Properties Of AlCoCrFeNi High
Structure and properties of FeCoNiCrCu0.5Alx high-entropy ...

Effects of Al content and heat treatment on the structure, hardness and electrochemical properties of FeCoNiCrCu0.5Alx high-entropy alloys were investigated. The phase structure of as-cast alloys evolves from FCC phase to BCC phase with the increase of Al content. The stable phase of FeCoNiCrCu0.5Alx high-entropy alloys will transform from FCC phase to FCC+BCC duplex phases when x value ...

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Microstructure, Mechanical and Corrosion Properties of ...

AlCoCrFeNi is one of the most widely studied alloy systems in the high-entropy alloy (HEA) area due to the interesting microstructure and mechanical properties. In this study, the AlCoCrFeNi alloy was prepared using spark plasma sintering (SPS) with pre-alloy powders obtained through gas atomization. Then, the sintered samples were annealed at 700, 800 and 900 °C, and the effect of annealing ...

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Tribological Behavior of AlCoCrFeNi(Ti0.5) High Entropy ...

The tribological properties of AlCoCrFeNi and AlCoCrFeNiTi0.5 high entropy alloys under gear oil and multiply alkylated cyclopentanes (MACs) lubrication condition have been studied. The equiaxed crystal structure of AlCoCrFeNi alloy is obtained after heat-treatment. The AlCoCrFeNiTi0.5 alloy keeps dendrite structure.

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Solidification Microstructure of AlCoCrFeNi 2.1 Eutectic ...

AlCoCrFeNi 2.1 eutectic high-entropy alloy (EHEA) ingots were successfully obtained by high-frequency melting and centrifugal metal-mold casting under an Ar flow. The microstructure of the ingots was investigated by trans-scale observations using optical microscopy (OM), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and scanning transmission electron microscopy ...

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Materials | Free Full-Text | Microstructure and Corrosion ...

In this paper, the (CoCrFeNi)95Nb5 high-entropy alloy (HEA) coating with a thickness of 500 μm on Q235 steel substrate was fabricated by plasma spraying. The microscopic results showed that a new Laves phase is formed in the (CoCrFeNi)95Nb5 HEA coating compared to the HEA powder, and elemental segregation occurs between the dendrites and the interdendrites of the coating, while the ...

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Microstructure and Corrosion Properties of AlCoCrFeNi High ...

Abstract. Electrospark deposition (ESD) was employed to clad the AlCoCrFeNi high-entropy alloy (HEA) on AISI 1045 carbon steel. The relationship between the microstructure and corrosion properties of the HEA-coated specimens was studied and compared with that of the copper-molded cast HEA material.

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Microstructure Evolution and Properties of Laser Cladding ...

corrosion resistance. It was found that the Al0.5 alloy coating exhibits excellent wear resistance, high hardness, and corrosion resistance in a 3.5 wt.% NaCl solution. Furthermore, the e ect of the Al content on the microstructure, phase, and the relating properties of …

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Microstructure, Mechanical and Corrosion Properties of ...

metals Article Microstructure, Mechanical and Corrosion Properties of Friction Stir Welding High Nitrogen Martensitic Stainless Steel 30Cr15Mo1N Xin Geng 1, Hao Feng 1, Zhouhua Jiang 1, Huabing Li 1,*, Binbin Zhang 1, Shucai Zhang 1, Qi Wang 1 and Jizhong Li 2 1 School of Metallurgy, Northeastern University, Shenyang 110819, China; [email protected] (X.G.); ...

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Microstructure and Corrosion Properties of AlCoCrFeNi High ...

Electrospark deposition (ESD) was employed to clad the AlCoCrFeNi high-entropy alloy (HEA) on AISI 1045 carbon steel. The relationship between the microstructure and corrosion properties of the HEA-coated specimens was studied and compared with that of the copper-molded cast HEA material. Two major microstructural differences were found between the cast HEA material and the HEA coatings.

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Fabrication of Nanocrystalline AlCoCrFeNi High Entropy ...

High entropy alloys (HEAs) are usually fabricated using arc melting which has the disadvantages of diseconomy, and the limitations in the shape and size of final products. However, recently, quite a large amount of research has been carried out to find the fabrication techniques for HEAs with better properties such as mechanical alloying and rapid solidification. In this paper, an AlCoCrFeNi ...

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Microstructure and corrosion properties of alcocrfeni high ...

Abstract. Electrospark deposition (ESD) was employed to clad the AlCoCrFeNi high-entropy alloy (HEA) on AISI 1045 carbon steel. The relationship between the microstructure and corrosion properties of the HEA-coated specimens was studied and compared with that of the copper-molded cast HEA material.

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Corrosion-resistant high-entropy alloys: A review (Journal ...

Microstructure and Corrosion Properties of AlCoCrFeNi High Entropy Alloy Coatings Deposited on AISI 1045 Steel by the Electrospark Process journal, December 2012. Li, Q. H.; Yue, T. M.; Guo, Z. N. Metallurgical and Materials Transactions A, Vol. 44, Issue 4; DOI: 10.1007/s11661-012-1535-4

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Effect of process parameters on the microstructure and ...

FeNiCoCrTi 0.5 coatings with different process parameters were fabricated by laser cladding. The macro-morphology, phase, microstructure, hardness, and wear resistance of each coating were studied. The smoothness and dilution rate of the FeNiCoCrTi 0.5 coating generally increased with the increase of specific energy (E s), which is the laser irradiation energy received by a unit area.

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Microstructure and mechanical properties of AlCoCrFeNi ...

Jun 05, 2019· Since their emergence in 2004, high entropy alloys (HEAs) have attracted rapidly increasing attentions from researchers in a variety of fields, such as materials science, alloy development and physics [1–10].The major novelty of HEAs is their tendency to form unexpected simple microstructure and to withstand promising mechanical properties [7, 8, 11–15].

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Microstructure and Corrosion Properties of AlCoCrFeNi High ...

Electrospark deposition (ESD) was employed to clad the AlCoCrFeNi high-entropy alloy (HEA) on AISI 1045 carbon steel. The relationship between the microstructure and corrosion properties of the ...

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Microstructure and Corrosion Properties of AlCoCrFeNi High ...

Dec 08, 2012· Electrospark deposition (ESD) was employed to clad the AlCoCrFeNi high-entropy alloy (HEA) on AISI 1045 carbon steel. The relationship between the microstructure and corrosion properties of the HEA-coated specimens was studied and compared with that of the copper-molded cast HEA material. Two major microstructural differences were found between the cast HEA material and …

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Microstructure and Corrosion Properties of AlCoCrFeNi …

Microstructure and Corrosion Properties of AlCoCrFeNi High Entropy Alloy Coatings Deposited on AISI 1045 Steel by the Electrospark Process Q.H. LI, T.M. YUE, Z.N. GUO, and X. LIN Electrospark deposition (ESD) was employed to clad the AlCoCrFeNi high-entropy alloy (HEA) on AISI 1045 carbon steel. The relationship between the microstructure and ...

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Microstructure and properties of in‐situ high entropy ...

Apr 15, 2020· Microstructure and properties of in‐situ high entropy alloy/tungsten carbide composites by mechanical alloying. ... High‐entropy alloys ... reveals that the α‐phase is a solid solution of AlCoCrFeNi, and white particles correspond to the WC phase.

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Plasma-Sprayed High Entropy Alloys: Microstructure and ...

High entropy alloys (HEAs) represent a new class of materials that present novel phase structures and properties. Apart from bulk material consolidation methods such as casting and sintering, HEAs can also be deposited as a surface coating. In this work, thermal sprayed HEA coatings are investigated that may be used as an alternative bond coat material for a thermal barrier coating system.

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Evolution of microstructure, mechanical and corrosion ...

Feb 15, 2017· In this study, direct laser fabrication (DLF) is utilized to prepare AlCoCrFeNi high entropy alloy at optimized operation parameters. The phase, microstructure, mechanical and corrosion properties of as-deposited alloy as well as samples aged at temperatures of 600 °C, 800 °C, 1000 °C and 1200 °C for 168 h have been investigated.

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Microstructure and Corrosion Properties Investigations of ...

Specify that High Entropy Alloys are characterized as alloys consisting of approximate equal concentrations of at least five metallic elements and are claimed to favor close-packed, disordered structures due to high configurational entropy. In this study, we investigate the microstructure and corrosion properties of AlCrNiCuMn high-entropy alloys.

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Microstructure and Mechanical Properties of High-Entropy ...

Five common elements Co, Cr, Fe, Ni and Al were selected, and CoCrFeNiAl was prepared by arc-melting. The microstructure and mechanical properties after spot welding were studied. The results show that the cast microstructure of high entropy alloy CoCrFeNiAl is relatively uniform with a dendritic morphology. The heat is inversely proportional with the alloy grain sizes.

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Electrospark deposition of AlCoCrFeNi high entropy alloy ...

Electrospark deposition of AlCoCrFeNi high entropy alloy on AISI 1045 carbon steel: Authors: Li, Qiaohui: Keywords: ... The aim of the research being to improve the corrosion resistance of the steel has been achieved. The microstructure and solidification behaviour, corrosion properties, and wear properties of the HEA coatings were studied and ...

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Evolution of microstructure, mechanical and corrosion ...

Request PDF | Evolution of microstructure, mechanical and corrosion properties of AlCoCrFeNi high-entropy alloy prepared by direct laser fabrication | High entropy alloy (HEA) is an emerging class ...

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Evolution of microstructure, hardness, and corrosion ...

In this study, we investigate the microstructure, hardness, and corrosion properties of as-cast Al0.5CoCrFeNi alloy as well as Al0.5CoCrFeNi alloys aged at temperatures of 350 °C, 500 °C, 650 ...

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Effects of Cr Content on Microstructure and Mechanical ...

However, studies on the effect of Cr content on the AlCoCrFeNi alloy have been less reported. In the present study, we investigated such effects on the crystal structure, microstructure, and mechanical properties of four high-entropy alloys with a nominal composition of AlCoCr x FeNi (x = 0.3, 0.5, 0.7, and 1.0, in molar ratio). 2.

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Microstructure and mechanical properties of AlCoCrFeNi ...

AlCoCrFeNi is among one of the most-widely studied alloy systems in the high entropy alloy (HEA) area. It exhibits interesting microstructure and unique mechanical properties. In this study, we assessed the feasibility of producing the AlCoCrFeNi alloy using powder metallurgy technique in which the pre-alloy powders were obtained through gas atomization and sintering was achieved by spark ...

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Surface degradation mechanisms in a eutectic high entropy ...

Apr 12, 2019· In the present study, wear and corrosion behavior were evaluated for the AlCoCrFeNi 2.1 eutectic high entropy alloy consisting of BCC (B2), …

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Microstructure and Properties of CoCrFeNi(WC) High-Entropy ...

The CoCrFeNi high-entropy alloy coatings (HEACs) with different weight ratios (10 and 30 wt.%) of WC additions have been prepared using mechanical alloying and a vacuum hot pressing sintering technique on a Q235 steel substrate. The microstructures, microhardness, wear resistance, and corrosion resistance of HEACs were studied. The CoCrFeNi(WC) powders were obtained by mixing the …

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Cooling Rate and Size Effect on the Microstructure and ...

In this paper, the size effects on the microstructure and mechanical behaviors of a high entropy alloy of AlCoCrFeNi was studied by preparing as-cast rod samples with different diameters. The alloy independent of cast diameter samples has the same phase of body centered cubic solid solution.

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Microstructure and wear resistance property of AlFeCrNiMox ...

Aug 09, 2019· Li Q H, Yue T M, Guo Z N and Lin X 2013 Microstructure and corrosion properties of AlCoCrFeNi high entropy alloy coatings deposited on AISI 1045 steel by the electrospark process Metallurgical & Materials Transactions A 44 1767–78. Crossref Google Scholar

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Microstructure, Mechanical and Corrosion Properties of ...

Nov 02, 2019· AlCoCrFeNi is one of the most widely studied alloy systems in the high-entropy alloy (HEA) area due to the interesting microstructure and mechanical properties. In this study, the AlCoCrFeNi alloy was prepared using spark plasma sintering (SPS) with pre-alloy powders obtained through gas atomization. Then, the sintered samples were annealed at 700, 800 and 900 °C, and the …

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Nearly full-density pressureless sintering of AlCoCrFeNi ...

AlCoCrFeNi is among the promising high-entropy alloys (HEAs) that possess high strength with considerable ductility. Powder sintering is one of the competitive routes for the production of HEA powders. However, sintering of HEA powders under a pressureless condition is difficult.

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Microstructure and wear properties of nitrided AlCoCrFeNi ...

May 01, 2018· The nitrided layer was prepared on the AlCoCrFeNi high-entropy alloy by plasma nitriding. The microstructure and tribological property of the nitrided layer and as-cast high-entropy alloy were studied at dry sliding condition, deionized water and the acid rain, respectively.

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Mechanical and corrosion properties of AlCoCrFeNi high ...

Oct 01, 2018· C.-M. Lin, H.-L. TsaiEvolution of microstructure, hardness, and corrosion properties of high-entropy Al 0.5 CoCrFeNi alloy Intermetallics, 19 (2011), pp. 288-294 Article Download PDF View Record in Scopus Google Scholar

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Diffusion bonding of AlCoCrFeNi eutectic high entropy ...

High entropy alloys have special microstructure and remarkable properties. To explore their potential engineering application in high temperature structures, the microstructure evolution of bonding interface, the elemental diffusion behavior and mechanical property of the diffusion bonded joint between AlCoCrFeNi 2.1 eutectic high entropy alloy (EHEA) and TiAl alloy were investigated.

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