High entropy effect on structure and properties of (Fe,Co,Ni,Cr)-B amorphous alloys

Ding, Jing; Inoue, Akihisa; Han, Yongdian; Kong, F.L.; Zhu, Shengli; Wang, Zhi; Shalaan, E.; Al-Marzouki, F.

doi:10.1016/j.jallcom.2016.11.223

Cited by 69 publications

(17 citation statements)

References 19 publications

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“…To minimize corrosion resistance vanishing caused by crystallization, crystal composition control is key. Crystal formation tunning with composition close to the primordial alloy composition inhibit pronounced chemical partitioning, such as the crystallization of multi-principal FCC and/or BCC phases whose composition is close to the remaining glassy matrix, as recently verified for Fe-based pseudo high-entropy glass forming alloys [50][51][52][53][54].…”

Section: Wear and Corrosion Properties Of Glassy Alloys And Partially...mentioning

confidence: 72%

Development of Fe-based glass former alloys for thermal spray coatings with optimized corrosion and wear properties

Kiminami¹,

Koga²,

Bolfarini³

et al. 2023

Tecnol. Metal. Mater. Min.

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Corrosion and wear of alloys is a costly and hidden safety risk for components in petrochemical, agroindustry, and mining activities, which are key segments in Brazil and in many countries. Accelerating the development of highperformance and durable ferrous alloys and their insertion into engineering structural applications has never been more important. Glass former steels have drawn considerable attention in recent years, due to the remarkable combinations of strength and degradation control that can be achieved by tailoring corrosion and wear resistances, which places these alloys amongst the durable ferrous alloy ever developed. Recent results from our group indicate that coatings using these alloys can be produced from commercial grade precursors and industrially available thermal spraying routes. The development of Fe-based bulk metallic glass (BMG) alloys for degradation control will open the door to next-generation coatings with unprecedented combinations of corrosion and wear resistances. This work summarizes the development of Fe-based glassy coatings for corrosion and wear control performed in our research group in the last 17 years covering: i) glass forming ability of alloys, ii) development of Fe-based glass former alloys, iii) thermal spraying of Fe-based glass former alloys, and iv) scientific and technological impacts of this research.

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Section: Wear and Corrosion Properties Of Glassy Alloys And Partially...mentioning

confidence: 72%

Development of Fe-based glass former alloys for thermal spray coatings with optimized corrosion and wear properties

Kiminami¹,

Koga²,

Bolfarini³

et al. 2023

Tecnol. Metal. Mater. Min.

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“…[ 39–42 ] It has been demonstrated that the appropriate addition of nonmetallic elements could synergistically improve strength–ductility of FCC‐structured HEAs [ 43,44 ] In addition, the latest research results also indicated that the nonmetallic elements Si, B, and C could significantly promote the corrosion resistance, oxidation resistance, wear resistance, and soft magnetism of HEAs. [ 45–48 ] The traditional binary eutectic alloys combining nonmetallic elements have been widely reported and investigated, such as Al–Si, Fe–C, and so on. [ 49,50 ] However, designing of EHEAs containing nonmetallic elements still needs further exploration.…”

Section: Introductionmentioning

confidence: 99%

Designing Eutectic High‐Entropy Alloys Containing Nonmetallic Elements

Zhang

Amar

et al. 2022

Adv Eng Mater

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Eutectic high‐entropy alloys (EHEAs), as an important branch of high‐entropy alloys (HEAs), have become hotpots in the materials field due to the excellent combination of mechanical properties and casting liquidity. However, designing of EHEAs containing nonmetallic elements has been rarely reported. Herein, a new strategy to design EHEAs containing nonmetallic elements by introducing an idealized mode of A‐(M + N) and using computer‐aided thermodynamic calculations is proposed. Based on this strategy, four new EHEAs, namely, CoFeNi2–Ti0.48Si0.8, CoCrNi2–V0.86B0.43, CoCrFeNi2–V0.89B0.45Si0.15, and CoCrNi2–MoC0.6, are designed and prepared. The CoFeNi2–Ti0.48Si0.8 and CoCrNi2–MoC0.6 EHEAs are composed of face‐centered‐cubic (FCC) + M16Ti6Si7‐type silicide and FCC + M23C6 + M6C‐type carbide, respectively. The CoCrNi2‐V0.86B0.43 and CoCrFeNi2‐V0.89B0.45Si0.15 EHEAs exhibit the same eutectic microstructure as FCC + M3B2‐type boride. The synthesized EHEAs containing nonmetallic elements show excellent mechanical properties. The experimental result indicates that this strategy can provide a feasible and effective way to develop new EHEAs with nonmetallic elements.

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“…So, the HE alloys may find use as materials for nuclear reactors applications, medicine, electronics devices, mechanical equipment, rocket casings, and engines, etc. Recently the amorphous high-entropy alloys have been successfully synthesized [7][8][9]. Such alloys were called high entropy metallic glasses (HE-MGs).…”

Section: Introductionmentioning

confidence: 99%

The effect of cooling rate on structure and mechanical properties of Co-Cr-Cu-Fe-Ni-Sn high entropy alloys

Kushnerov

Башев

2021

JPhysElectron

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The paper examines the structure and mechanical properties of multicomponent high-entropy CoCrCuFeNiSnx alloys in as-cast and splat-quenched states. The compositions of investigated alloys is analyzed by using the criteria for predicting the phase composition of high-entropy alloys available in the literature, based both on calculations of the entropy and enthalpy of mixing and on an estimate of the difference between the atomic radii of the component. The alloy films is fabricated by the known technique of splat-quenching. A cooling rate estimated by a film thickness is ~ 106 K/s. The simultaneous formation of two solid solutions (FCC + ordered BCC) has been established in the alloy structure. An increase in the concentration of Sn favors the formation of the ordered (В2 type) solid solution in the structure of the alloys. High values of the microhardness and dislocation density have been obtained in the splat-quenched samples. It is also shown that an increase in the Sn content positively affects the microhardness.

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High entropy effect on structure and properties of (Fe,Co,Ni,Cr)-B amorphous alloys

Cited by 69 publications

References 19 publications

Development of Fe-based glass former alloys for thermal spray coatings with optimized corrosion and wear properties

Development of Fe-based glass former alloys for thermal spray coatings with optimized corrosion and wear properties

Designing Eutectic High‐Entropy Alloys Containing Nonmetallic Elements

The effect of cooling rate on structure and mechanical properties of Co-Cr-Cu-Fe-Ni-Sn high entropy alloys

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