Impact of uneven distribution of grain characteristics on yield strength and martensitic transformation of as-hot-rolled medium-entropy alloys

J Lee, H Park, S Son, JW Bae, JY Kim, SK Kim… - Journal of Materials …, 2024 - Elsevier
As-hot-rolled medium-entropy alloys (MEAs) with unevenly distributed grain sizes of face-
centered cubic grains exhibit better yield strength without uniform elongation loss compared …

Microband-driven martensitic transformation in as-hot-rolled metastable medium-entropy alloys

J Lee, S Son, SS Sohn, JW Bae, HS Kim - Materials Science and …, 2023 - Elsevier
Hot rolling triggers dynamic recrystallization and dislocation-based microbands.
Dislocations within these microbands in as-hot-rolled metastable medium-entropy alloys …

A review on the effect of various rolling regimes (cryo, cold, warm, hot) and post-annealing on high-entropy alloys: microstructure evolution, deformation mechanisms …

M Tayyebi, M DerakhshaniMolayousefi - Archives of Civil and Mechanical …, 2023 - Springer
Despite their complex composition, high-entropy alloys (HEAs) have a simple structure and
have been extensively researched for their ability to achieve unique properties through …

Effects of plasticity-induced martensitic transformation and grain refinement on the evolution of microstructure and mechanical properties of a metastable high entropy …

S Bhowmik, J Zhang, SC Vogel, SS Nene… - Journal of Alloys and …, 2022 - Elsevier
This paper describes the main results from an experimental investigation into tailoring the
phase content and grain structure for high strength of a microstructurally flexible high …

Breakthrough the strength-ductility trade-off in a high-entropy alloy at room temperature via cold rolling and annealing

W Zhang, Z Ma, H Zhao, L Ren - Materials Science and Engineering: A, 2021 - Elsevier
Simultaneous strength–ductility enhancement of a high-entropy alloy via cold rolling and
annealing is difficult. Cold rolling and annealing were performed on an as-cast Fe 35 Co 21 …

Microstructure refinement of a transformation-induced plasticity high-entropy alloy

H Yi, D Wei, R Xie, Y Zhang, H Kato - Materials, 2021 - mdpi.com
High-entropy alloys (HEAs) have attracted extensive interest due to their unprecedented
structure and mechanical performance. We recently proposed a series of novel corich …

Double-humped strain hardening in a metastable ferrous medium-entropy alloy by cryogenic pre-straining and subsequent heat treatment

J Lee, JW Bae, P Asghari-Rad, HS Kim - Scripta Materialia, 2022 - Elsevier
Significant benefits of either heterogeneous microstructures or deformation-induced
martensitic transformation (DIMT) in metallic materials stem from their superior strain …

Multiple-stage strain hardening due to the deformation-induced martensitic transformation in additively manufactured high-entropy alloy

J Kwon, F Haftlang, YT Choi, ES Kim… - Materials Research …, 2024 - Taylor & Francis
This study investigates microstructural changes and the presence of multiple stages in strain
hardening ratio (SHR) resulting from the sequential occurrence of deformation-induced …

Yield strength insensitivity in a dual-phase high entropy alloy after prolonged high temperature annealing

J Ahmed, M Daly - Materials Science and Engineering: A, 2021 - Elsevier
Recent studies of FeMnCoCr-based high entropy alloys have demonstrated uncommon
deformation behaviors such as transformation-induced plasticity, which were largely …

Ultrastrong and ductile additively manufactured precipitation-hardening medium-entropy alloy at ambient and cryogenic temperatures

N Yao, T Lu, K Feng, B Sun, RZ Wang, J Wang, Y Xie… - Acta Materialia, 2022 - Elsevier
Strong and ductile precipitation-hardening face-centered cubic medium-entropy alloys
(MEAs) are potential structural material candidates for cryogenic applications, which …