Micro-to-nano-scale deformation mechanisms of a bimodal ultrafine eutectic composite

Seoung Wan Lee, Jeong Tae Kim, Sung Hwan Hong, Hae Jin Park, Jun Young Park, Nae Sung Lee, Yongho Seo, Jin Yoo Suh, Jürgen Eckert, Do Hyang Kim, Jin Man Park, Ki Buem Kim

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48 Citations (Scopus)


The outstading mechanical properties of bimodal ultrafine eutectic composites (BUECs) containing length scale hierarchy in eutectic structure were demonstrated by using AFM observation of surface topography with quantitative height measurements and were interpreted in light of the details of the deformation mechanisms by three different interface modes. It is possible to develop a novel strain accommodated eutectic structure for triggering three different interface-controlled deformation modes; (I) rotational boundary mode, (II) accumulated interface mode and (III) individual interface mode. A strain accommodated microstructure characterized by the surface topology gives a hint to design a novel ultrafine eutectic alloys with excellent mechanical properties.

Original languageEnglish
Article number6500
JournalScientific reports
Publication statusPublished - 2014

Bibliographical note

Funding Information:
This work was supported by the Global Research Laboratory (GRL) and the National Research Foundation of Korea (NRF) grant (No. 2013R1A2A2A05006550). One of the authors, Y. Seo, specially thanks to the support from Priority Research Centers Program through the National Research Foundation of Korea (NRF) (No. 2010-0020207).

All Science Journal Classification (ASJC) codes

  • General


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