Deformation-induced martensitic transformations: A strategy for overcoming the strength-ductility trade-off in high-entropy alloys

MS Mehranpour, N Rasooli, HS Kim… - Current Opinion in Solid …, 2024 - Elsevier
High-entropy alloys (HEAs) have become an important topic in modern materials science
due to their exceptional properties. Despite their attractive properties, achieving a superior …

Designing structures with combined gradients of grain size and precipitation in high entropy alloys for simultaneous improvement of strength and ductility

S Qin, M Yang, P Jiang, J Wang, X Wu, H Zhou, F Yuan - Acta Materialia, 2022 - Elsevier
Suppressing the early strain localization at the nanostructured topmost layer is crucial for
achieving better tensile ductility in the gradient structure. Thus, structures with combined …

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

D Wei, W Gong, T Tsuru, I Lobzenko, X Li… - International Journal of …, 2022 - Elsevier
Face-centered cubic single-phase high-entropy alloys (HEAs) containing multi-principal
transition metals have attracted significant attention, exhibiting an unprecedented …

Hierarchical precipitates, sequential deformation-induced phase transformation, and enhanced back stress strengthening of the micro-alloyed high entropy alloy

G Yang, JK Kim - Acta Materialia, 2022 - Elsevier
We report the annealing time-dependent microstructures and deformation mechanisms of
the novel face-centered cubic Fe 49.5 Mn 30 Co 10 Cr 10 C 0.2 Ti 0.1 V 0.1 Mo 0.1 HEA …

Superior mechanical properties and deformation mechanisms of a 304 stainless steel plate with gradient nanostructure

YT Sun, X Kong, ZB Wang - International Journal of Plasticity, 2022 - Elsevier
Spatially gradient microstructures have shown a promising application in enhancing
strength-ductility synergy of engineering metals such as austenitic stainless steels. However …

Strength-ductility synergy of an additively manufactured metastable high-entropy alloy achieved by transformation-induced plasticity strengthening

C Tian, D Ouyang, P Wang, L Zhang, C Cai… - International Journal of …, 2024 - Elsevier
This study investigated the microstructures and mechanical properties of a metastable high-
entropy alloy (HEA) Fe 34 Co 34 Cr 20 Mn 6 Ni 6 produced by laser powder bed fusion …

Achieving exceptional strength-ductility synergy in a complex-concentrated alloy via architected heterogeneous grains and nano-sized precipitates

J Fan, X Ji, L Fu, J Wang, S Ma, Y Sun, M Wen… - International Journal of …, 2022 - Elsevier
The development of alloys with excellent strength-ductility synergy is a long-lasting research
theme for material scientists, which also holds true for the newly emerged complex …

Tensile creep behavior of HfNbTaTiZr refractory high entropy alloy at elevated temperatures

CJ Liu, C Gadelmeier, SL Lu, JW Yeh, HW Yen… - Acta Materialia, 2022 - Elsevier
Tensile creep, which is one of the most important deformation modes for high temperature
applications, is rarely reported for refractory high entropy alloys (RHEAs). In the present …

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 **e… - 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 …

In situ EBSD/DIC-based investigation of deformation and fracture mechanism in FCC-and L12-structured FeCoNiV high-entropy alloys

Z Ye, C Li, M Zheng, X Zhang, X Yang, J Gu - International Journal of …, 2022 - Elsevier
This study investigated the plastic deformation behavior of a polycrystalline L1 2-structured
FeCoNiV high-entropy alloy (HEA) using in situ electron backscatter diffraction (EBSD) and …