Extraordinary creep resistance in a non-equiatomic high-entropy alloy from the optimum solid-solution strengthening and stress-assisted precipitation process

S Chen, J Qiao, H Diao, T Yang, J Poplawsky, W Li… - Acta Materialia, 2023 - Elsevier
Improving creep resistance has commonly been achieved by the optimization of alloy design
that results into strong solid-solution strengthening and/or coherent precipitates for …

Elevated-temperature cyclic deformation mechanisms of CoCrNi in comparison to CoCrFeMnNi

K Lu, F Knöpfle, A Chauhan, D Litvinov, M Schneider… - Scripta Materialia, 2022 - Elsevier
We report the cyclic deformation behavior of CoCrNi at 550° C under a strain amplitude
of±0.5% and compare it to that of CoCrFeMnNi. CoCrNi manifests cyclic hardening followed …

Effects of lattice distortion and chemical short-range order on creep behavior of medium-entropy alloy CoCrNi

G Huang, X Zhang, Z **e, WR Jian, R Zhang… - Mechanics of Materials, 2023 - Elsevier
Creep behavior of multi-principal element alloys (MPEAs) is an intriguing topic to explore for
their potential high-temperature applications. The challenge on this topic is to elucidate what …

A micromechanical study on the effects of precipitation on the mechanical properties of CoCrFeMnNi high entropy alloys with various annealing temperatures

CW Huang, PY Su, CH Yu, CL Wang, YC Lo… - Scientific reports, 2023 - nature.com
The CoCrFeMnNi high entropy alloys remain an active field over a decade owing to its
excellent mechanical properties. However, the application of CoCrFeMnNi is limited …

Understanding the sigmoidal primary creep behaviour in a multi-component solid-solution Co-base alloy between 700–850° C

AK Karnati, N Koundinya, AN Majila, RS Kottada - Materialia, 2024 - Elsevier
This investigation was motivated by the lack of understanding of the role of solid solution
strengthening and substructure evolution during the creep of multi-component alloys. Thus …

Decoupling the chemical-ordering-dependent dislocation and diffusion contributions to creep in multi-principal element alloy

L Xu, XZ Tang, YF Guo, YJ Wang - Materials Research Letters, 2024 - Taylor & Francis
In multi-principal element alloys, dislocation motion and lattice diffusion are two key plasticity
carriers, which are strongly interacted with the local chemical order. While in creep …

[HTML][HTML] Short-term tensile creep behavior of CoCrNi-based multi-principal element alloys

K Lu, J Aktaa - Intermetallics, 2024 - Elsevier
We report the short-term tensile creep behavior of CoCrFeMnNi and CoCrNi model MPEAs
at 550° C. Dislocation glide and dislocation-dislocation/lattice interactions are proposed to …

Microstructure and Mechanical Properties of CoCrFeNiSix (x = 0, 0.25, 0.5, 0.75) High-Entropy Alloys Based on Powder Plasma Arc Additive Manufacturing

J Luo, J Wang, C Su, Y Geng, X Chen - Journal of Materials Engineering …, 2023 - Springer
CoCrFeNi high-entropy alloy (HEA) has the characteristics of high plasticity and low
strength, which limit its application and development. In this study, a novel powder plasma …

[PDF][PDF] Chang‑Wei Huang, Pei‑Ying Su 2, Chi‑Hua Yu 3Ε, Chia‑Ling Wang 2, Yu‑Chieh Lo 4

JSC Jang, HT Hu - Scientific Reports, 2023 - casalab.civil.ncku.edu.tw
The CoCrFeMnNi high entropy alloys remain an active field over a decade owing to its
excellent mechanical properties. However, the application of CoCrFeMnNi is limited …