Mechanical Assistant

TINGKUN LIU

Email: **********@*****.***; LinkedIn URL: www.linkedin.com/in/tingkun-liu-7a3680104

Tel:865-***-****; Address: 6315 Kingston Pike, Knoxville, TN 37919, United States PROFESSIONAL SUMMARY

Talented professional with a strong background in materials science and mechanical engineering, including metallurgy, heat processing, mechanical testing, and failure analysis. Extensive research experience of metals and alloys, i.e. steels, Ni alloys, high entropy alloys and amorphous alloys. Proficiency in experimental techniques for materials analysis and numerical simulation of stress analysis by finite element method. SKILLS

• Mechanical testing (tension/compression/hardness)

• Microstructural characterization

• X-ray /Neutron diffraction

• Finite element analysis (ABAQUS)

• Optical microscope

• Electron Microscope (SEM/EDS/EBSD)

• Nanoindentation • Python/Matlab/Microsoft office EXPERIENCE

Graduate Research Assistant, University of Tennessee 05/2015-now o Fundamental research on deformation mechanisms of advanced metallic materials, including elastically and plastically deformation induced structural heterogeneity in metallic glasses, irradiation effect on structural and mechanical changes in metallic glasses investigated by nanoindentation and micro-pillar compression, neutron diffraction investigation of deformation behaviors of dislocation slipping, mechanical twinning in high entropy alloys and texture measurements, et al.

o Computational study of mechanical behaviors using crystal plasticity finite element method, creating and optimizing finite element models by CAE and NEPER for single-phase and dual-phase alloys, steels and composites, running finite element model and analyzing the results for mechanical respond, i.e. lattice stain evolution during deformation, lattice strain field mapping around fatigue crack tip. Graduate Research Assistant, Oak Ridge National Laboratory 01/2016-now o Welding of dissimilar metals by cladding, manual and/or automatic gas tungsten arc welding of Alloy 709 with different filler metals, analyzed the failure mode, characterized microstructure and chemical composition o Conducted in-situ/ex-situ neutron diffraction, deduced and analyzed the neutron results to investigate the deformation behaviors of high entropy alloys

o Carried out nanoindentation tests to study the deformation mechanism of metallic glasses o Examined the microstructure of various materials, such as HEAs, Al alloys, Ni alloys and steels Assistant Researcher, Shanghai Synchrotron Radiation Facility, China 04/2013-04/2015 o Consulted with users about the experiments strategy, guided and assisted users to complete the experiments at the diffraction beamline

o Developed new experimental methodology, such us in-situ tensile test, residual stress measurements by synchrotron X-ray diffraction

o New equipment Purchase and development, such as high energy X-ray detector, and development of software system o Beamline control system troubleshoot and update

PUBLICATIONS

o Liu, T. K., et al. "Twinning-mediated work hardening and texture evolution in CrCoFeMnNi high entropy alloys at cryogenic temperature." Materials & Design 131 (2017): 419-427. o Liu, T. K., et al. "Probing elastically or plastically induced structural heterogeneities in bulk metallic glasses by nanoindentation pop-in tests." AIP Advances 7.8 (2017): 085216. o Liu, T. K., et al. "Interface coherency strain relaxation due to plastic deformation in single crystal Ni-base superalloys." Materials Science and Engineering: A 568 (2013): 83-87. EDUCATION

Doctoral degree (Ph.D.), Materials Science and Engineering, University of Tennessee at Knoxville 2018 Thesis: Experimental and Computational Studies of Mechanical Behaviors of Bulk Metallic Glasses and High Entropy Alloys Master’s degree (M.S.), Material Science and Engineering, Beijing Institute of Technology 2013 Thesis: Study of the Micro Mechanical Behaviors in Single Crystal Ni-base Superalloys by Synchrotron x-ray Diffraction Bachelor’s degree (B.S.), Material Science and Engineering, Beijing Institute of Technology 2010 Thesis: Study on the Laser Welding of 93WNiFe Alloy and 40CrNiMo Steel

Contact this candidate