|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Coupling Experiments and Modeling to Understand Plasticity and Failure
||Reliability of Slip Resistance Determination in Hexagonal Materials
||Chen Zhang, Aritra Chakraborty, Philip Eisenlohr, Carl Boehlert, Martin A. Crimp, Thomas R. Bieler
|On-Site Speaker (Planned)
Hexagonal alloys based on Ti, Mg, or Zr are technologically important structural materials.
Due to the low lattice symmetry compared to cubic materials such as Al, Fe, and Cu, their dislocation-mediated plastic deformation involves a multitude of slip families, which renders the constitutive description of hexagonal crystal plasticity non-trivial.
In this work, the two commonly used methods of (i) statistically analyzing surface slip traces and (ii) conospherical indentation into individual grains to determine the (initial) slip resistance of hexagonal slip families are compared.
The uncertainties associated with both are assessed through virtual experiments based on spatially resolved simulations of multi-grain deformation and single crystal indentation.
Supported by the US Department of Energy, Office of Basic Energy Science through grant DE-FG02-09ER46637, by the National Science Foundation through grant DMR-1411102, and in part by Michigan State University through computational resources provided by the Institute for Cyber-Enabled Research.
||Planned: Supplemental Proceedings volume