Seok-Woo gave an invited talk at NANO KOREA 2019 at KINTEX, South Korea. The title of his talk was “Superelasticity in ThCr2S2-structured intermetallic compounds and their hybrid structures.” This talk summarized all results of superelasticity research that his group has worked on for the last four years.

 

1. Gyuho Song, Vladislav Borisov, William R. Meier, Mingyu Xu, Keith J. Dusoe, John T. Sypek, Roser Valenti, Paul C. Canfield, Seok-Woo Lee*, “Ultrahigh elastically compressible and strain-engineerable intermetallic compounds under uni-axial mechanical loading,” APL Materials 7, 061104 (2019) [PDF] [web]

2. Ian N. Bakst, Keith J. Dusoe, Gil Drachuk, James R. Neilson, Paul C. Canfield, Seok-Woo Lee, Christopher R. Weinberger, “Effects of point defects on the mechanical response of LaRu2P2,” Acta Materialia 160 224-234 (2018) – [PDF][web]

3. Ian N. Bakst, Hang Yu, Mohammadreza Bahadori, Haibo Yu, Seok-Woo Lee, Mark Aindow, Christopher R. Weinberger*, “Insights into the plasticity of Ag3Sn from Density Functional Theory,” International Journal of Plasticity 110 57-73 (2018) – [PDF][web]

4. Keara Frawley, Ian Bakst, John T. Sypek, Sriram Vijayan, Christopher R. Weinberger, Paul C. Canfield, Mark Aindow, Seok-Woo Lee, “A nanoindentation study on plastic deformation and fracture behaviors of [0 0 1] CaFe2As2 intermetallic compound,” JOM 70, 1074-1080 (2018) [PDF][web]

5. John T. Sypek, Hang Yu, Keith J. Dusoe, Gil Drachuck, Hetal Petal, Amanda M. Giroux, Alan I. Goldman, Andreas Kreyssig, Paul C. Canfield, Sergey L. Bud’ko, Christopher R. Weinberger, Seok-Woo Lee, “Superelasticity and cryogenic linear shape memory effects of CaFe2As2,” Nature Communications 8 1083 (2017) [PDF][web]

6. John T. Sypek, Christopher R. Weinberger, Sriram Vijayan, Mark Aindow, Paul C. Canfield, Seok-Woo Lee, “Superealstic and micaceous deformation in the intermetallic compound CaFe2As2,” Scripta Materialia 141 10-14 (2017) – [PDF][web]

Seok-Woo received “Teaching excellence” for his MSE3004 (Mechanical Behavior of Materials) in 2019 Spring semester. This is his fifth time to receive teaching excellence at UConn.

Tyler’s Al6061 cold spray work was published at Scripta Materialia!

Tyler J. Flanagan, Benjamin Bedard, Alex Ernst, Avinash M. Dongare, Seok-Woo Lee, Harold D. Brody, Victor K. Champagne Jr, Mark Aindow, “Mechanical properties of supersonic-impacted Al6061 microparticles,” – Scripta Materialia, 171, 52-56 (2019) [PDF] [web].

This work studied the mechanical properties of Al6061 microparticles that undergo supersonic impacts with ~1 km/s impact velocity. The effects of initial microstructures and impact velocities on mechanical properties were investigated. This work includes various in-situ videos of micro-compression/tension tests. Please enjoy two of them below!

 

< Micro-tension test >

 

< Interfacial fracture >

Gyuho’s CaKFe4As4 paper is published at Applied Physics Letters (APL) Materials. Many Congratulations!

Gyuho Song, Vladislav Borisov, William R. Meier, Mingyu Xu, Keith J. Dusoe, John T. Sypek, Roser Valenti, Paul C. Canfield, Seok-Woo Lee*, “Ultrahigh elastically compressible and strain-engineerable intermetallic compounds under uni-axial mechanical loading,” APL Materials, 7, 061104 (2019) [PDF] [web]

This paper reports the possibility of superconductivity shut-down under uniaxial compression at the micrometer scale. I love this paper!

 

Gyuho’s paper is published at Computational Materials Science. Many Congrats!

Gyuho Song, Seok-Woo Lee, “Effect of temperature on surface-controlled dislocation multiplication in body-centered-cubic metal micropillars,” – Computational Materials Science, 168, 172-179 (2019) [PDF] [web] 

This is the first computation paper from my group. Also, this is the first paper done solely by my group. I am very proud of this work. Great job, Gyuho!

 

(John Sypek and Seok-Woo at Jorgensen Center, UConn)

Many congratulations on my first PhD students (John Sypek and Keith Dusoe)’s graduation!

Keith was not able to attend the ceremony due to his personal issue, but many congratulations, too!

Seok-Woo’s Capstone Design Team won the 2nd place in MSE Capstone Presentation!

The team members are Beril Tonyali, Avery Gray, and Lara Huapaya Rojas.

The project title is “The effects on heat treatment on microstructure and mechanical properties of additive manufactured AlSi10Mg“. This work was sponsored by Sikorsky.

They confirmed the unexpectedly rapid kinetics of Si clustering and grain growth in additive manufactured materials and identified the optimum condition of heat treatment to produce the combination of high yield strength, high ultimate tensile strength, and high ductility. The optimized mechanical properties are surprisingly similar with those of Al6061-T6. Our data are nearly the state-of-art compared to literatures that have been published in recent 6 years. I really appreciate their great efforts!

 

(From the left: Seok-Woo, Lara, Beril, and Avery).

Seok-Woo was selected as the 2018 MSE Teaching Excellence of the Year!

(Note: He was also the 2017 recipient!)

Gyuho receives 2019 Outstanding Leadership Award at the 2019 MSE Banquet! Many Congratulations!

Gyuho served as the MRS chapter president for two years (2017, 2018) and made a great contribution to the MSE department. He facilitated various activities for both undergraduate and graduate students. We all appreciate all his excellent leadership!

Gyuho won the second place from the 2019 MSE presentation competition.

Gyuho also became the member of Alpha Sigma Mu.

 

Seok-Woo received 2019 UConn Mentorship Excellence Award from Office of Undergraduate Research (04/12/2019).

This award results from undergraduate research with Hetal Patel (Class of 2019) for the last four years. Hetal has studied deformation mechanisms of superelastic material (CaFe2As2) and single crystal tungsten.

She recently accepted the admission offer from the MSE department at UC Berkeley. She also received the NSF graduate student fellowship and the NDSEG fellowship. Both are very prestigious awards for a prospective PhD student.

I really appreciate all her excellent efforts and wish her a very successful career at UC Berkeley!

Hetal’s award speech is available at the website of Office of Undergraduate Research.

Also, the MSE department news highlighted this news at the MSE department webpage.