High Entropy Alloy

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High Entropy Alloy (HEA)

For the past decade and a half a new alloying strategy that involves the combination of multiple principal elements in high concentrations to create new materials called high-entropy alloys has been emerging. High-entropy alloys have greatly expanded the compositional space for alloy design. The multidimensional compositional space that can be tackled with this approach is practically limitless, and only very small compositional regions have been investigated so far. Nevertheless, a few high-entropy alloys have already been shown to possess good mechanical, magnetic and invar properties, exceeding in part those of some conventional alloys, and more such high-entropy alloys are likely to be discovered in the future.

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  • 1. H.S.Kim, S.I.Hong, A Model of the Ductile-Brittle Transition of Partially Crystallized Amorphous Al-Ni-Y Alloys, Acta Materialia 47 (1999) 2059-2066.
  • 2. H.S.Kim, P.J.Warren, B.Cantor, H.R.Lee, Mechanical Properties of Partially Crystallized Aluminium Based Amorphous Alloys, Nanostructured Mater. 11 (1999) 241-247.
  • 3. H.S.Kim, Strengthening mechanisms of Zr-based devitrified amorphous alloy nanocomposites, Scripta Mater. 48 (2003) 43-49.
  • 4. H.S.Kim, H.Kato, A.Inoue, H.S.Chen, Finite Element Analysis of Compressive Deformation of Bulk Metallic Glasses, Acta Materialia 52 (2004) 3813-3823.
  • 5. H-J.Jun, K.S.Lee, S.C.Yoon, H.S.Kim, Y.W.Chang, Finite-element analysis for high temperature deformation of bulk metallic glasses in supercooled liquid region based on free volume constitutive model, Acta Materialia 58 (2010) 4267-4280./li>
  • 6. C.Jeon, C.P.Kim, S-H.Joo, H.S.Kim, S.Lee, High Tensile Ductility of Ti-Based Amorphous Matrix Composites Modified from Conventional Ti-6Al-4V Titanium Alloy, Acta Materialia 61 (2013) 3012-3026.
  • 7. Y. H. Jo, S. Jung, W. M. Choi, S. S. Sohn, H. S. Kim, B. J. Lee, N. J. Kim, S. Lee, Cryogenic strength improvement by utilizing room-temperature deformation twinning in partially recrystallized VCrMnFeCoNi high entropy alloy, Nature Comm. 8 (2017) 15719.
  • 8. Jae Bok Seol; Jae Wung Bae; Jong Chan Han; Jung Gi Kim; Zhiming Li; Dierk Raabe*; Hyoung Seop Kim*, Boron doped ultrastrong and ductile high-entropy alloys, Acta Materialia 151 (2018) 366-376.
  • 9. Jae Wung Bae, Jae Bok Seol, Jong Un Moon, Seok Su Sohn, Min Ji Jang, Ho Yong Um, Byeong-Joo Lee, Hyoung Seop Kim, Exceptional Phase-Transformation Strengthening of Ferrous Medium-Entropy Alloys at Cryogenic Temperatures, Acta Materialia 161 (2018) 388-399.
  • 10. Jongun Moon, Jeong Min Park, Jae Wung Bae, Hyeon-Seok Do, Byeong-Joo Lee, Hyoung Seop Kim, A new strategy for designing immiscible medium-entropy alloys with excellent tensile properties, Acta Materialia 193 (2020) 71-82.
  • 11. Nhung Thi-Cam Nguyen, Peyman Asghari-Rad, Praveen Sathiyamoorthi, Alireza Zagaran, Chong Soo Lee, Hyoung Seop Kim, Ultrahigh high-strain-rate superplasticity in a high-entropy alloy, (2020) Nature Communications 11 (2020) 2736.
  • 12. Jae-Bok Seol, Jae Wung Bae, Zhiming Li, Hyun Hwi Lee, Sang Hun Shim, Jung Gi Kim, Won-Seok Ko, Sun Ig Hong, Hyoung Seop Kim, Short-range order strengthening in boron-doped high-entropy alloys for cryogenic applications, Acta Materialia 194 (2020) 366-377.
  • 13. Jongun Moon, Young Choi, Taisuke Sasaki, Minho Joo, Hyunkwon Shin, Jeong Soo Lee, Tadakatsu Ohkubo, Kazuhiro Hono, Seung Mi Baek, Hyoung Seop Kim, Corrosion-resistant Cu-Fe-based immiscible medium-entropy alloy with tri-layer passivation, Corrosion Science 193 (2021) 109888.
  • 14. Mohammad Reza Akbarpour, Homayoun Mousa Mirabad, Amir Hemmati, Hyoung Seop Kim*, Processing and Microstructure of Ti-Cu Binary Alloys: A Comprehensive Review, Prog. Mater. Sci. (2022) Progress in Materials Science 127 (2022) 100933.
  • 15. Kaveh Edalati, Abbas Mohammadi, Marc Novelli, Makoto Arita, Jae Wung Bae, Hyoung Seop Kim, Thierry Grosdidier, Gradient-structured high-entropy alloy with improved combination of strength and hydrogen embrittlement resistance, Corrosion Science 200 (2022) 110253.
  • 16. Qingfeng Wu, Feng He, Junjie Li, Hyoung Seop Kim*, Zhijun Wang*, Jincheng Wang*, Tuning eutectic alloys to ultrastrong metallic materials via phase-selective recrystallization, Nature Comm. 13 (2022) 4697.
  • 17. Jae Bok Seol*, Won-Seok Ko, Yoon-Uk Heo, Jung Gi Kim, Hyokyung Sung, Zhiming Li, Elena Pereloma, Hyoung Seop Kim*, Mechanically driven short-range order and its impact on the multiple-principal-element alloys, Nature Communications 13 (2022) 6766.
  • 18. Hyeonseok Kwon, Praveen Sathiyamoorthi, Manogna Gangaraju, Alireza Zargaran, Hyoung Seop Kim*, Manogna Gangaraju, High-density nanoprecipitates and phase reversion via maraging enable ultrastrong yet strain-hardenable medium-entropy alloy, Acta Materialia 248 (2023) 118810.
  • 19. Farahnaz Haftlang, Jae Bok Seol, Alireza Zargaran, Jongun Moon*, Hyoung Seop Kim*, Chemical core-shell metastability-induced large ductility in medium-entropy maraging and reversion alloys, Acta Materialia 256 (2023) 119115.
  • 20. Hyeonseok Kwon, Praveen Sathiyamoorthi, Manogna Gangaraju, Alireza Zargaran, Hyoung Seop Kim*, Manogna Gangaraju, High-density nanoprecipitates and phase reversion via maraging enable ultrastrong yet strain-hardenable medium-entropy alloy, Acta Materialia 248 (2023) 118810.