Decoupling the roles of constituent phases in the strengthening of hydrogenated nanocrystalline dual-phase high-entropy alloys

Gao, Zhe; Zhao, Yakai; Park, Jeong-Min; Jeon, A-Hyun; Murakami, Kotaro; Komazaki, Shin‐ichi; Tsuchiya, Koichi; Ramamurty, Upadrasta; Jang, Jae-il

doi:10.1016/j.scriptamat.2021.114472

Cited by 10 publications

(2 citation statements)

References 35 publications

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“…Recently, there have been several attempts to fabricate nanocomposites by performing the HPT processing on dualphase HEAs (such as Al 0.7 CoCrFeNi) 81) or two disks of HEAs with different phases. 82) For example, Taheriniya et al 82) produced an FCC CoCrFeMnNi and BCC Hf NbTaTiZr nanocomposite via HPT processing (Fig.…”

Section: Fundamental Applications Of Nanoindentation: Hardness and El...mentioning

confidence: 99%

“…4(b) clearly revealed that a significant increase in hardness was observed in Phase 2 near the interphase boundary, in which deformation-induced dislocation accumulation and element migration occurred. 82) Similarly, Gao et al 81) carried out nanoindentation on an HPT-processed dual-phase Al 0.7 CoCrFeNi HEA for exploring the contribution of constituent phases to its overall strength. Since the BCC/B2 phases (especially in HPTprocessed samples) are too small to be directly indented, the authors suggested the protocol to estimate the hardness of only BCC/B2 phase from the hardness of FCC + BCC/B2 mixture, which is schematically illustrated in Fig.…”

Section: Fundamental Applications Of Nanoindentation: Hardness and El...mentioning

confidence: 99%

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A Review of Recent Research on Nanoindentation of High-Entropy Alloys Processed by High-Pressure Torsion

et al. 2023

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High entropy alloys (HEAs) are a novel class of materials that have emerged as potential candidates for various industrial applications due to their excellent mechanical properties at cryogenic, ambient, elevated temperatures, and even under a hydrogen environment. The incorporation of nanocrystalline (nc) structure into HEAs has attracted significant attention for the further enhancement of their exceptional properties, as exceptional grain refinement usually results in enhanced strength without a large expense of ductility. High-pressure torsion (HPT) is often considered one of the most efficient methods for nanocrystallization, and this also holds true for HEAs. Recently, nanoindentation technique has been widely utilized to explore the relationship between HPT-induced grain refinement and mechanical behavior due to the inhomogeneous microstructure within the HPT disk. In this report, recent nanoindentation studies performed on HPT-processed HEAs are comprehensively reviewed with special emphasis on the nanomechanical behavior of nc HEAs.

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Section: Fundamental Applications Of Nanoindentation: Hardness and El...mentioning

confidence: 99%

Section: Fundamental Applications Of Nanoindentation: Hardness and El...mentioning

confidence: 99%