Jien-Wei Yeh

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Jien-Wei Yeh is a professor in the Department of Materials Science and Engineering at the National Tsing Hua University, in Hsinchu, Taiwan. [1] He is known for his contributions to the field of high-entropy alloy. He has a Google H-index of 95 with over 54,921 citations [2] and is named on 336 publications according to Research Gate. [3]

Research on high-entropy alloys

Yeh first conceived the idea for high-entropy alloys in 1995. [4] Yeh led his first research group on the subject in 2001 funded by the National Science Council of Taiwan. That research group published several papers in 2004 [5] and a review in 2020. [6] Notably, the early work was soon after Brian Cantor released some of his foundational work. [6] [7]

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High-entropy alloys (HEAs) are alloys that are formed by mixing equal or relatively large proportions of (usually) five or more elements. Prior to the synthesis of these substances, typical metal alloys comprised one or two major components with smaller amounts of other elements. For example, additional elements can be added to iron to improve its properties, thereby creating an iron-based alloy, but typically in fairly low proportions, such as the proportions of carbon, manganese, and others in various steels. Hence, high-entropy alloys are a novel class of materials. The term "high-entropy alloys" was coined by Taiwanese scientist Jien-Wei Yeh because the entropy increase of mixing is substantially higher when there is a larger number of elements in the mix, and their proportions are more nearly equal. Some alternative names, such as multi-component alloys, compositionally complex alloys and multi-principal-element alloys are also suggested by other researchers.

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References

  1. "Jien-Wei Yeh". National Tsing Hua University Department of Materials Science and Engineering. Retrieved 2023-10-25.
  2. "Jien-Wei Yeh". scholar.google.com. Retrieved 30 November 2023.
  3. "Jien-Wei Yeh profile" . Retrieved 30 November 2023.
  4. Balasubramanian, N (November 2016). "High-entropy alloys: An interview with Jien-Wei Yeh: www.mrs.org/fall2016". MRS Bulletin. 41 (11): 905–06. doi: 10.1557/mrs.2016.257 . ISSN   0883-7694. S2CID   137802916.
  5. Yeh, JW; Chen, SK; Lin, SJ; Gan, JY; Chin, TS; Shun, TT; Tsau, CH; Chang, SY (May 2004). "Nanostructured High-Entropy Alloys with Multiple Principal Elements: Novel Alloy Design Concepts and Outcomes". Advanced Engineering Materials. 6 (5): 299–303. doi:10.1002/adem.200300567. ISSN   1438-1656. S2CID   137380231.
  6. 1 2 Biswas, K; Yeh, JW; Bhattacharjee, PP; DeHosson, JM (November 2020). "High entropy alloys: Key issues under passionate debate". Scripta Materialia. 188: 54–58. doi:10.1016/j.scriptamat.2020.07.010. ISSN   1359-6462. S2CID   224864551.
  7. Kim, KB; Zhang, Y; Warren, PJ; Cantor, B (July 2003). "Crystallization behaviour in a new multicomponent Ti 16.6 Zr 16.6 Hf 16.6 Ni 20 Cu 20 Al 10 metallic glass developed by the equiatomic substitution technique". Philosophical Magazine. 83 (20): 2371–81. Bibcode:2003PMag...83.2371K. doi:10.1080/0141861031000113343. ISSN   1478-6435. S2CID   136579175.