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Prof. Trelewicz presents one invited and one contributed talk at the 2016 MRS Conference in Boston, MA.
November 28, 2016
Jason’s invited talk described EMNL’s work on mechanics driven design of crystalline amorphous nanolaminates. The contributed talk highlighted work with Tim Rupert’s group at UC Irvine on achieving nanocrystalline metals with extreme strength through grain boundary doping.

Bin’s paper on “Mechanistic Coupling of Dislocation and STZ Plasticity in Crystalline Amorphous Nanolaminates” is published in Acta Materialia.
September 1, 2016
This paper explores the deformation behavior of crystalline-amorphous nanolaminates through molecular dynamics simulations using nanolaminate models that contain columnar nanograins in the crystalline layers to more closely resemble experimentally accessible nanolaminate structures. Quantitative analysis of the plastic strain distribution among competing mechanisms and their coupling at the nanoscale is accomplished through the implementation of continuum deformation metrics.

Olivia’s paper on “Microstructure and Corrosion Resistance of Laser Additively Manufactured 316L Stainless Steel” is published in the March 2016 issue of JOM on Additive Manufacturing.
July 4, 2016
This paper describes our research on microstructural evolution during the devitrification of amorphous tantalum thin films synthesized via pulsed laser deposition. The phases formed during crystallization and their stability were characterized as a function of the chamber pressure during deposition, devitrification temperature, and annealing time. A range of metastable nanocrystalline tantalum oxides were identified following devitrification including multiple orthorhombic oxide phases, which often were present with, or evolved to, the tetragonal TaO 2 phase. New insights were gained into the transformation sequence and stability of these nanocrystalline phases, which presents opportunities for the development of advanced tantalum oxide‐based dielectric materials for novel memristor designs..

Prof. Trelewicz appointed to the Metallurgical and Materials Transactions A Board of Review.
April 17, 2016

Metallurgical and Materials Transactions A focuses on the latest research in all aspects of physical metallurgy and materials science. It explores relationships among processing, structure, and properties of materials; publishes critically reviewed, original research of archival significance.  Each member of the Board of Review is called a “Key Reader”, and it is the responsibility of the Key Reader to provide the editors with a concise and unambiguous evaluation of the merits of a manuscript and with an equally unambiguous recommendation of the action to be taken.

EMNL’s research featured in the Times Beacon Record
April 05, 2016

EMNL’s research on the design of new interface engineered metallic glasses was featured in the science column “The Power of 3” in the Times Beacon Record.  Prof. Trelewicz is pictured along with Ph.D. students Olivia Donaldson and Jonathan Gentile in front of the new SEM/FIB at Stony Brook University’s Advanced Energy Center. Further information can be found HERE.

Prof. Trelewicz presents invited talk at RPI
April 5, 2016

Jason’s talk on “Stress-assisted Grain Growth in Nanocrystalline Metals Inhibited by Grain Boundary Segregation” described our work on understanding the mechanisms underpinning mechanical grain growth in nanocrystalline metals and the role of segregated solute in suppressing nanostructure evolution.

Prof. Trelewicz receives NSF CAREER Award on “Interface Engineered Amorphous Alloys for Thermoplastic Forming of Ductile Bulk Metallic Glasses”
March 14, 2016

This CAREER award supports fundamental research to understand the mechanisms underpinning strain delocalization in interface engineered amorphous alloys containing intergranular regions of excess free volume. The research team will perform molecular dynamics simulations of shear localization collectively with advanced characterization and nanomechanical testing of interface engineered amorphous alloys to elucidate the role of interfacial structure and amorphous grain size in the mechanics of strain delocalization. Innovations in additive spray manufacturing will be devised to enable transformational microstructures that effectively delocalize the accumulation of plastic strain via distributed microplasticity.  Further information can be found HERE.

Prof. Trelewicz’s materials engineering course for non-engineering majors, “Materials of the Modern World”, featured by ASEE.
March 11, 2016

Joining the ranks of such universities as Princeton, Wesleyan, and University of Maryland, a case study of Stony Brook University’s (SBU)’s innovative engineering education courses appeared in a collection of similar innovations showcased by ASEE as one of  14 exemplary programs.  The case study, written by Sheila Tobias, a nationally-known figure in science and mathematics reform, focused on TECH and Science, Technology, and Society (STAS) courses offered by the College of Engineering and Applied Sciences (CEAS) that are geared toward non-majors. Further information can be found HERE.

Olivia’s paper on “Microstructure and Corrosion Resistance of Laser Additively Manufactured 316L Stainless Steel” is published in the March 2016 issue of JOM on Additive Manufacturing.
February 28, 2016

This paper describes our work in collaboration with Prof. Gary Halada (SBU) and Prof. Guha Manogharan (Youngstown State University) on the formation of micro and nanoscale structures in 316L stainless steel samples printed by laser additive manufacturing.  A variety of techniques including x-ray diffraction, optical, scanning and transmission electron microscopy, x-ray fluorescence, and energy dispersive x-ray spectroscopy were employed to characterize the microstructure and chemistry of these materials, which revealed that multiscale segregation of segregation of Mo contributed to a reduction in the corrosion resistance relative to wrought 316L stainless steel.

Prof. Trelewicz presents one invited and two contributed talks at the 2016 TMS Annual Meeting in Nashville, TN.
February 15, 2016

Jason’s invited talk highlighted EMNL’s work on the mechanisms of stress-assisted grain growth in nanocrystalline metals and the effect of segregated solute on suppressing microstructural evolution.  The contributed talks focused on the coupling of dislocation and shear transformation zone plasticity in crystalline-amorphous nanolaminates, and in situ electron microscopy analysis of microstructural evolution in amorphous and nanocrystalline Ta thin films.

EMNL receives funding from Pacific Northwest National Laboratory for “Thermodynamic Modeling of Nanostructure Stability in Al, Mg, and Fe Alloys”
February 1, 2016

This research is a two-year collaborative project with PNNL with a focus on implementing thermodynamic models for nanostructure stability to design alloy compositions with the potential to form nanostructures stable against microstructural evolution and phase segregation.

Prof. Trelewicz presents a keynote talk at the International Symposium on Plasticity in Kona, HI.
January 5, 2016

Jason’s talk on “The Synergistic Role of Grain Boundaries and Amorphous-Crystalline Interfaces in the Deformation of Metallic Nanolaminates” discussed our work on the role of grain boundaries in biasing the onset of plasticity and nanovoid formation in crystalline-amorphous nanolaminates.