S
Sanghoon Shim
Researcher at Oak Ridge National Laboratory
Publications - 10
Citations - 823
Sanghoon Shim is an academic researcher from Oak Ridge National Laboratory. The author has contributed to research in topics: Nanoindentation & Deformation (engineering). The author has an hindex of 7, co-authored 10 publications receiving 773 citations. Previous affiliations of Sanghoon Shim include University of Tennessee.
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Journal ArticleDOI
Effects of pre-strain on the compressive stress-strain response of Mo-alloy single-crystal micropillars
Hongbin Bei,Sanghoon Shim,Sanghoon Shim,George M. Pharr,George M. Pharr,Easo P. George,Easo P. George +6 more
TL;DR: In this article, a NiAl-Mo eutectic was directionally solidified to produce composites with well-aligned single-crystal Mo-alloy fibers embedded in NiAl matrix, and then the matrix was etched away to expose free-standing micropillars having different sizes (360-1400 nm) and different amounts of pre-strain (0-11%).
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Compressive strengths of molybdenum alloy micro-pillars prepared using a new technique
Hongbin Bei,Hongbin Bei,Sanghoon Shim,Sanghoon Shim,Easo P. George,Easo P. George,Michael K Miller,Erik G. Herbert,George M. Pharr,George M. Pharr +9 more
TL;DR: In this article, single-crystal micro-pillars of a molybdenum alloy were prepared by a new technique that involves chemically etching away the matrix of a directionally solidified NiAl-Mo eutectic.
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Increased time-dependent room temperature plasticity in metallic glass nanopillars and its size-dependency
Byung-Gil Yoo,Ju-Young Kim,Yong-Jae Kim,In-Chul Choi,Sanghoon Shim,Ting Y. Tsui,Hongbin Bei,Upadrasta Ramamurty,Jae-il Jang +8 more
TL;DR: In this paper, the authors investigated the influence of sample size on the time-dependent plastic deformation behavior in amorphous alloys and found that at a given stress, higher total strains accrue in the smaller specimens.
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An experimental evaluation of the constant β relating the contact stiffness to the contact area in nanoindentation
TL;DR: Experiments were performed with the Berkovich indenter, but with five other three-sided pyramidal indenters with centreline-to-face angles ranging from 35.3° (cube corner) to 85.0°.
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Specimen Size Effects on Zr-Based Bulk Metallic Glasses Investigated by Uniaxial Compression and Spherical Nanoindentation
TL;DR: In this article, the authors investigated the effect of size on the mechanical behavior of Zr-based bulk metallic glasses (BMGs) and found that the fracture surfaces of small specimens are smooth, without the vein patterns normally observed as characteristic features on the fracture surface of BMGs.