High-entropy alloys with heterogeneous microstructure: processing and mechanical properties

P Sathiyamoorthi, HS Kim - Progress in Materials Science, 2022 - Elsevier
Engineering metallic materials are an essential class of materials for a variety of industrial
applications due to their competitive mechanical properties, especially strength and ductility …

[HTML][HTML] Twenty years of the CoCrFeNiMn high-entropy alloy: achieving exceptional mechanical properties through microstructure engineering

H Shahmir, MS Mehranpour, SAA Shams… - Journal of Materials …, 2023 - Elsevier
The CoCrFeNiMn multicomponent is one of the most widely and best studied of all high-
entropy alloys (HEAs) since its exceptional properties suggest potential uses as a structural …

Enhancement of strength-ductility trade-off in a high-entropy alloy through a heterogeneous structure

SW Wu, G Wang, Q Wang, YD Jia, J Yi, QJ Zhai, JB Liu… - Acta Materialia, 2019 - Elsevier
The improvement in strength is usually accompanied by ductility loss in structural materials,
which is a long-standing conflict referred as the strength-ductility trade-off. Here we present …

Superior tensile properties of 1% C-CoCrFeMnNi high-entropy alloy additively manufactured by selective laser melting

JM Park, J Choe, JG Kim, JW Bae, J Moon… - Materials Research …, 2020 - Taylor & Francis
CoCrFeMnNi high-entropy alloys containing 1 at% carbon (C-HEAs) were additively
manufactured using selective laser melting (SLM). Superior tensile properties of the as-built …

Ultrahigh high-strain-rate superplasticity in a nanostructured high-entropy alloy

NTC Nguyen, P Asghari-Rad, P Sathiyamoorthi… - Nature …, 2020 - nature.com
Superplasticity describes a material's ability to sustain large plastic deformation in the form
of a tensile elongation to over 400% of its original length, but is generally observed only at a …

Effect of heat treatment on microstructural heterogeneity and mechanical properties of 1% C-CoCrFeMnNi alloy fabricated by selective laser melting

JM Park, ES Kim, H Kwon, P Sathiyamoorthi… - Additive …, 2021 - Elsevier
In this study, we quantitatively investigated the effect of heat treatment on microstructural
evolution and mechanical properties in the selective laser melting (SLM) processed 1% C …

Cell boundary engineering of ferrous medium-entropy alloy fabricated by laser powder bed fusion

JM Park, H Kwon, J Choe, KT Kim, JH Yu, YU Heo… - Scripta Materialia, 2023 - Elsevier
The concept of cell boundary (CB) engineering was proposed to explore the potential
benefits of segregation engineering in obtaining superior mechanical properties in materials …

Machine learning-based predictions of fatigue life for multi-principal element alloys

NJ Sai, P Rathore, A Chauhan - Scripta Materialia, 2023 - Elsevier
Compared to conventional alloys, multi-principal element alloys (MPEAs) offer attractive and
tunable fatigue properties. With the advancement of machine learning (ML) in material …

Non-equiatomic FeMnCrNiAl high-entropy alloys with heterogeneous structures for strength and ductility combination

D Liu, X Jin, N Guo, PK Liaw, JW Qiao - Materials Science and Engineering …, 2021 - Elsevier
The development of sound cost-effective alloys is always the pursuit of engineering
application materials. A non-equiatomic FeMnCrNiAl high-entropy alloy (HEA) has been …

Ultra-strong and strain-hardenable ultrafine-grained medium-entropy alloy via enhanced grain-boundary strengthening

JM Park, DC Yang, HJ Kim, DG Kim, S Lee… - Materials Research …, 2021 - Taylor & Francis
An equiatomic VCoNi medium-entropy alloy possesses high sensitivity to grain-boundary
strengthening, achieved by severe lattice distortions. Its ultrafine-grain structure enables 1.5 …