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Zachary Kloenne

  • Graduate Research Associate, Materials Science Engineering
  • Graduate Teaching Associate, Materials Science Engineering
  • 1305 Kinnear Road
    Suite 100
    Columbus, OH 43212

About

Zachary attended The Ohio State University as an undergraduate where he earned a bachelor’s degree in Materials Science and Engineering as well as a minor in Nuclear Engineering in 2015. He is currently working on his PhD in Materials Science and Engineering. Zachary collaborates with the University of Birmingham on his research involving a new alpha/beta titanium alloy (Ti-407) developed by TIMET. The alloy exhibits enhanced properties compared to other alpha/beta alloys, such as Ti-6Al-4V and Ti-3Al-2.5V. Ti-407 achieves these properties through a balance of strength and ductility. It is critically important to understand the deformation mechanisms in order to elucidate the source of enhanced properties seen in this alloy.  

Current investigations focus on determining the alloy’s response to strain as well as microstructure. Quantification of the microstructural features is done through the combination of backscattered electron imaging (BSE) and the image processing software MIPAR. Strain is tracked using optical digital image correlation (DIC) during room temperature mechanical tests. After samples have been mechanically tested, Zachary uses a combination of transmission Kikuchi diffraction (TKD) and transmission electron microscopy (TEM) to analyze the deformation substructure of the alloy. Relating deformation mechanisms back to microstructure will help optimize the properties achieved in this alloy. 

Zachary has also collaborated with the University of Birmingham in studies involving the influence of heat treatment on the microstructure and properties of HIPed Ti-6Al-4V, with emphasis on oxygen partitioning upon cooling, through the use of electron energy loss spectroscopy (EELS). 

Zachary is currently collaborating with the Royal Melbourne Institute of Technology in a study involving the grain refinement of a LENS Al-Cu alloy. Active grain refiners are being investigated through the use of scanning transmission electron microscopy (STEM), energy x-ray dispersive spectroscopy (EDX) and transmission Kikuchi diffraction (TKD). 

Transmission Kikuchi Diffraction (TKD) of deformed Ti-407 specimen (1.5 % strain) with loading direction normal to page.

Conventional Transmission Electron Microscopy (CTEM) of image a). 2-beam imaging was used to determine nature of dislocations present.