Author: Lee, Seok-Woo

Seok-Woo gave two talks and chaired the session at TMS 2016, Nashville, TN.

During TMS 2016 (Feb 17 and 18), Nashville, TN, Seok-Woo gave two talks.

1. Two different pathways to produce novel Cu-based nanostructured alloys with enhanced strength and ductility (Seok-Woo Lee, Keith Dusoe, Sriram Vijayan, Thomas Bissell, Dale Gouveia, Mark Aindow – all UConn people)

2. Transition of deformation mode in hollow Cu60Zr40 metallic glass nanolattice (Seok-Woo Lee (UConn), David Chen (Caltech), Julia Greer (Caltech))

Also, Seok-Woo chaired the session of themo-mechanical processing in the symposium ultra-fine grained material.

Welcome Tyler!

Tyler Flanagan (MSE PhD candidate) joined our group! Welcome to join us! He will work on namo-mechanical characterization of metal powders for cold spray application. This work is supported by Army Research Laboratory.

“Size Effect Suppresses Brittle Failure in Hollow Cu60Zr40 Metallic Glass Nanolattices Deformed at Cryogenic Temperatures” was published at Nano Letters

Cryogenic_Nanolattices

Seok-Woo’s article entitled “Size Effect Suppresses Brittle Failure in Hollow Cu60Zr40 Metallic Glass Nanolattices Deformed at Cryogenic Temperatures” was published at Nano Letters [Link].

[Abstract]

To harness smaller is more ductile behavior emergent at nanoscale and to proliferate it onto materials with macroscale dimensions, we produced hollow-tube Cu60 Zr40 metallic glass nanolattices with the layer thicknesses of 120, 60, and 20 nm. They exhibit unique transitions in deformation mode with tube-wall thickness and temperature. Molecular dynamics simulations and analytical models were used to interpret these unique transitions in terms of size eff ects on the plasticity of metallic glasses and elastic instability.

Keith, John, and Seok-Woo attended the GRC physical metallurgy.

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The first conference presentations from Lee’s research group!

Keith gave a poster presentation entitled “Novel Cu-base nanostructured alloys with enhanced strength and ductility”, and John gave a poster presentation entitled “Mechanical properties of Y-Cu nanostructured composites”. This was a great opportunity to meet people and learn the frontier in physical metallurgy. Great jobs!