4.7 Article

A new route to achieve high strength and high ductility compositions in Cr-Co-Ni-based medium-entropy alloys: A predictive model connecting theoretical calculations and experimental measurements

Related references

Note: Only part of the references are listed.
Article Materials Science, Multidisciplinary

Temperature-dependent yield stress of single crystals of non-equiatomic Cr-Mn-Fe-Co-Ni high-entropy alloys in the temperature range 10-1173 K

Zhongding Fan et al.

Summary: The temperature-dependent yield strengths of [123]-oriented single crystals of four quinary non-equiatomic CrMn-Fe-Co-Ni high-entropy alloys (HEAs) were investigated. The critical resolved shear stress (CRSS) exhibited a rapid decrease from 10 K to 300 K, followed by a slower decrease and a plateau above 873 K. The yield strength at cryogenic temperatures was positively correlated with Cr content.

ACTA MATERIALIA (2023)

Article Materials Science, Multidisciplinary

A Hall-Petch study of the high toughness Cr40Co30Ni30 multi-principal element alloy

Fernanda Cunha Puosso et al.

Summary: Multi-principal element alloys (MPEAs) are a promising class of metallic materials due to their wide range of possible properties and applications. This study focuses on the characterization and analysis of the Cr40Co30Ni30 MPEA, which exhibits a favorable strength-ductility balance and can be further strengthened by grain refining. The grain growth kinetics analysis provides valuable insights for the design and processing of this alloy, enhancing its potential for future applications.

JOURNAL OF MATERIALS RESEARCH (2023)

Article Chemistry, Physical

Formation condition and effect on the early stages of plastic deformation of chemical short-range order in Cr-Co-Ni medium-entropy alloy

Takeshi Teramoto et al.

Summary: The variation in chemical short-range order (CSRO) in Cr-Co-Ni medium entropy alloy was studied using electrical resistivity measurements. The results showed that thermodynamic equilibrium above 1075 K could not be achieved in conventional sample preparations. The resistivity quenched at different temperatures increased with lower annealing temperature, especially below 873 K. The activation energy was determined to be 240-270 kJ mol-1 and was similar to atomic diffusion in the Cr-Mn-Fe-Co-Ni high-entropy alloy, indicating a link between resistivity change and atomic arrangement. Compression tests on single crystals with varying degrees of CSRO showed that the degree of CSRO did not significantly affect the early stages of plastic deformation.

JOURNAL OF ALLOYS AND COMPOUNDS (2023)

Article Materials Science, Multidisciplinary

Evolution of short-range order and its effects on the plastic deformation behavior of single crystals of the equiatomic Cr-Co-Ni medium-entropy alloy

Le Li et al.

Summary: Short-range ordering (SRO) in the equiatomic Cr-Co-Ni medium-entropy alloy (MEA) was studied using electrical resistivity measurements and mechanical tests. SRO was found to increase gradually with time during isothermal annealing and higher temperatures led to shorter saturation time but higher saturation resistivity. Plastic deformation behavior and stress-strain curves were not significantly affected by SRO, indicating SRO has little influence on mechanical properties.

ACTA MATERIALIA (2023)

Article Materials Science, Multidisciplinary

Metalloid substitution elevates simultaneously the strength and ductility of face-centered-cubic high-entropy alloys

Daixiu Wei et al.

Summary: Recently-developed high-entropy alloys (HEAs) have expanded the compositional space and mechanical properties by substituting the constituent metals with metalloids. Metalloid substitution increases strength by increasing local lattice distortion and short-range chemical inhomogeneities, while reducing stacking fault energy to discourage dynamic recovery.

ACTA MATERIALIA (2022)

Article Engineering, Mechanical

Tensile and compressive plastic deformation behavior of medium-entropy Cr-Co-Ni single crystals from cryogenic to elevated temperatures

Le Li et al.

Summary: The equiatomic Cr-Co-Ni medium-entropy alloy with a FCC structure was studied for its various properties, including the measurement of critical resolved shear stress and the formation of deformation twinning. The CRSS value increases significantly with decreasing temperature and undergoes changes below 50 K. Additionally, the form and characteristics of deformation twinning at different temperatures were also investigated.

INTERNATIONAL JOURNAL OF PLASTICITY (2022)

Article Nanoscience & Nanotechnology

Advanced mechanical properties obtained via accurately tailoring stacking fault energy in Co-rich and Ni-depleted CoxCr33Ni67-x medium-entropy alloys

Dong Huang et al.

Summary: This paper designs a new CoxCr33Ni67-x medium-entropy alloy with controlled Cr content, which reflects the changes in Co and Ni content effectively. By adjusting the Co and Ni content, the stacking fault energy is reduced and the deformation mode is changed, resulting in high tensile strength and uniform elongation.

SCRIPTA MATERIALIA (2022)

Article Materials Science, Multidisciplinary

Effect of solid-solution strengthening on deformation mechanisms and strain hardening in medium-entropy V1-xCrxCoNi alloys

Hyun Chung et al.

Summary: High- and medium-entropy alloys with high solid-solution strength have significant effects on strain-hardening rate. In this study, the role of solid-solution strengthening on strain-hardening rate was revealed by controlling the Cr/V ratio in V1-xCrxCoNi alloys and investigating the evolution of deformation structures. The results showed that under the activated huge solid-solution strengthening effect, dislocation-mediated plasticity can be predominant over twinning, leading to an overall higher strain-hardening rate in the V-rich alloys.

JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY (2022)

Article Engineering, Mechanical

Si-addition contributes to overcoming the strength-ductility trade-off in high-entropy alloys

Daixiu Wei et al.

Summary: This study demonstrates that the addition of silicon to CoCrFeNi HEA can improve its performance by maintaining a single-phase FCC structure while simultaneously increasing strength and ductility. The addition of silicon enhances solid solution strengthening, reduces SFE, and improves dislocation behavior and plastic deformation mechanisms.

INTERNATIONAL JOURNAL OF PLASTICITY (2022)

Article Multidisciplinary Sciences

Exceptional fracture toughness of CrCoNi-based medium- and high-entropy alloys at 20 kelvin

Dong Liu et al.

Summary: This study found that CrCoNi alloy displays exceptional crack growth toughness at 20 Kelvin, with high crack-initiation fracture toughness values and crack growth toughness values. The crack-tip deformation structures at 20 K involve nucleation and restricted growth of stacking faults, fine nanotwins, and transformed epsilon martensite, with coherent interfaces.

SCIENCE (2022)

Article Materials Science, Multidisciplinary

Plastic deformation of single crystals of the equiatomic Cr-Mn-Fe-Co-Ni high-entropy alloy in tension and compression from 10 K to 1273 K

Marino Kawamura et al.

Summary: The plastic deformation behavior of single crystals of the Cr-Mn-Fe-Co-Ni high-entropy alloy has been studied at different temperatures, showing sensitivity to strain rate, temperature, and crystal orientation. Solid-solution hardening is identified as the main strengthening mechanism, with deformation twinning occurring at low temperatures, impacting the material's tensile properties.

ACTA MATERIALIA (2021)

Article Materials Science, Multidisciplinary

Microstructure and mechanical properties of CoCrNi-Mo medium entropy alloys: Experiments and first-principle calculations

Ruobin Chang et al.

Summary: The addition of Mo element can increase the strength and ductility of CoCrNi alloy, inducing a higher density of stacking faults during tensile deformation. Ab initio calculation results show the MSAD and SFE values of (CoCrNi)(97)Mo-3 alloy, further discussing the relationship between mechanical properties and MSAD, SFE for various multiple principal element alloys.

JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY (2021)

Article Nanoscience & Nanotechnology

Plastic deformation mechanism of CoCrxNi medium entropy alloys

Jiaohui Yan et al.

Summary: By increasing the amount of chromium in CoCrxNi alloys, the strength and ductility are improved simultaneously, with thinner deformation twin bands and a transition in dislocation patterns observed. These factors contribute to the excellent plasticity and work hardening ability of CoCrNi alloy.

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING (2021)

Article Physics, Applied

Hall-Petch and grain growth kinetics of the low stacking fault energy TRIP Cr40Co40Ni20 multi-principal element alloy

Gustavo Bertoli et al.

Summary: The Cr40Co40Ni20 alloy exhibits a single-phase face centered cubic initial structure with partial transformation to hexagonal close packed phase during straining. It shows significant yield strength-grain size dependence and high activation energy for grain growth, leading to refined grain structures. The alloy combines strength and ductility under tension, while an empirical equation is proposed to describe stacking fault energy in Cr-Co-Ni alloys to enhance deformation mechanisms.

APPLIED PHYSICS LETTERS (2021)

Article Chemistry, Multidisciplinary

Enhanced lattice distortion, yield strength, critical resolved shear stress, and improving mechanical properties of transition-metals doped CrCoNi medium entropy alloy

Md Lokman Ali

Summary: The addition of transition metals enhances the lattice distortion and yield strength of the CrCoNi alloy, while maintaining high ductility and strengthening ability. The relationship between atomic displacement and critical resolved shear stress for these alloying systems was approximately linear, indicating the universality of the results. These simulation findings are valuable for future development and research of CrCoNi-based quaternary alloys with improved mechanical properties.

RSC ADVANCES (2021)

Article Multidisciplinary Sciences

Yield strength and misfit volumes of NiCoCr and implications for short-range-order

Binglun Yin et al.

NATURE COMMUNICATIONS (2020)

Article Materials Science, Multidisciplinary

Effect of Cobalt-Content on Mechanical Properties of Non-Equiatomic Co-Cr-Ni Medium Entropy Alloys

Shuhei Yoshida et al.

MATERIALS TRANSACTIONS (2020)

Article Multidisciplinary Sciences

Cooperative deformation in high-entropy alloys at ultralow temperatures

Muhammad Naeem et al.

SCIENCE ADVANCES (2020)

Article Multidisciplinary Sciences

Short-range order and its impact on the CrCoNi medium-entropy alloy

Ruopeng Zhang et al.

NATURE (2020)

Article Materials Science, Multidisciplinary

High-throughput solid solution strengthening characterization in high entropy alloys

Francisco Gil Coury et al.

ACTA MATERIALIA (2019)

Article Nanoscience & Nanotechnology

Correlation of microdistortions with misfit volumes in High Entropy Alloys

Wolfram Georg Noehring et al.

SCRIPTA MATERIALIA (2019)

Article Chemistry, Multidisciplinary

Ultrastrong Medium-Entropy Single-Phase Alloys Designed via Severe Lattice Distortion

Seok Su Sohn et al.

ADVANCED MATERIALS (2019)

Review Materials Science, Multidisciplinary

Mechanical properties of high-entropy alloys with emphasis on face-centered cubic alloys

Zezhou Li et al.

PROGRESS IN MATERIALS SCIENCE (2019)

Article Materials Science, Multidisciplinary

Novel Co-rich high entropy alloys with superior tensile properties

Daixiu Wei et al.

MATERIALS RESEARCH LETTERS (2019)

Article Materials Science, Multidisciplinary

Deformation mechanism transition in Fe-17Mn-0.4C-0.06V TWIP steel with different strain rates

Mei Xu et al.

MATERIALS SCIENCE AND TECHNOLOGY (2018)

Article Materials Science, Multidisciplinary

Probing deformation mechanisms of a FeCoCrNi high-entropy alloy at 293 and 77 K using in situ neutron diffraction

Yiqiang Wang et al.

ACTA MATERIALIA (2018)

Article Materials Science, Multidisciplinary

Critical stress for twinning nucleation in CrCoNi-based medium and high entropy alloys

He Huang et al.

ACTA MATERIALIA (2018)

Article Materials Science, Multidisciplinary

Twinning-induced plasticity (TWIP) steels

Bruno C. De Cooman et al.

ACTA MATERIALIA (2018)

Article Chemistry, Physical

Stacking fault energy of face-centered-cubic high entropy alloys

S. F. Liu et al.

INTERMETALLICS (2018)

Article Multidisciplinary Sciences

High Throughput Discovery and Design of Strong Multicomponent Metallic Solid Solutions

Francisco G. Coury et al.

SCIENTIFIC REPORTS (2018)

Article Multidisciplinary Sciences

Tunable stacking fault energies by tailoring local chemical order in CrCoNi medium-entropy alloys

Jun Ding et al.

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (2018)

Review Materials Science, Multidisciplinary

Lattice distortions in high-entropy alloys

Lewis Robert Owen et al.

JOURNAL OF MATERIALS RESEARCH (2018)

Article Physics, Multidisciplinary

Local Structure and Short-Range Order in a NiCoCr Solid Solution Alloy

F. X. Zhang et al.

PHYSICAL REVIEW LETTERS (2017)

Review Materials Science, Multidisciplinary

A critical review of high entropy alloys and related concepts

D. B. Miracle et al.

ACTA MATERIALIA (2017)

Article Materials Science, Multidisciplinary

Stacking fault energies of face-centered cubic concentrated solid solution alloys

Shijun Zhao et al.

ACTA MATERIALIA (2017)

Article Materials Science, Multidisciplinary

Reasons for the superior mechanical properties of medium-entropy CrCoNi compared to high-entropy CrMnFeCoNi

G. Laplanche et al.

ACTA MATERIALIA (2017)

Article Materials Science, Multidisciplinary

Solute strengthening in random alloys

C. Varvenne et al.

ACTA MATERIALIA (2017)

Article Chemistry, Physical

Thermodynamic stability of Mg-Y-Zn ternary alloys through first principles

Ryohei Tanaka et al.

INTERMETALLICS (2016)

Article Multidisciplinary Sciences

Metastable high-entropy dual-phase alloys overcome the strength-ductility trade-off

Zhiming Li et al.

NATURE (2016)

Article Multidisciplinary Sciences

Exceptional damage-tolerance of a medium-entropy alloy CrCoNi at cryogenic temperatures

Bernd Gludovatz et al.

NATURE COMMUNICATIONS (2016)

Article Materials Science, Multidisciplinary

Modelling solid solution hardening in high entropy alloys

Isaac Toda-Caraballo et al.

ACTA MATERIALIA (2015)

Article Nanoscience & Nanotechnology

The influence of sample thickness on the tensile properties of pure Cu with different grain sizes

L. Yang et al.

SCRIPTA MATERIALIA (2013)

Article Materials Science, Multidisciplinary

Premature Fracture Mechanism in an Fe-Mn-C Austenitic Steel

Motomichi Koyama et al.

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE (2012)

Article Materials Science, Multidisciplinary

First-principles-based phase diagram of the cubic BNC ternary system

Koretaka Yuge et al.

PHYSICAL REVIEW B (2008)