Dynamic Behaviour of Multi-phase Materials

Abstract

This project investigated the micro-mechanisms of dynamic deformation in heterogeneous materials containing multiple (FCC, BCC) phases while subjected to extreme loading conditions. The research program was primarily conducted using testing facilities at UNSW Canberra: a convertible single/double stage gas gun able to achieve impact velocities of 4.5 km/s and a compression/tensile Hopkinson bar. Diagnostic equipment to monitor the in-situ deformation included a 4-point Photon Doppler Velocimetry (PDV) and a variety of high speed cameras (e.g. Phantom). The deformed microstructures were analyzed via SEM (EBSD), TEM and X-Ray analyses. These techniques collectively provided a comprehensive understanding of how microstructural features affect the overall dynamic mechanical response of simple heterogenous materials.

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Document Details

Document Type
Technical Report
Publication Date
Oct 10, 2019
Accession Number
AD1096518

Entities

People

  • Christopher Neel
  • Juan P. Escobedo-diaz
  • Manny Gonzales

Organizations

  • University of New South Wales

Tags

Communities of Interest

  • Air Platforms
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Air Force Research Laboratories
  • Alloys
  • Chemistry
  • Compression
  • Crystal Structure
  • Engineering
  • Failure Mode And Effect Analysis
  • Gas Guns
  • Materials
  • Materials Science
  • Metallurgy
  • Microstructure
  • Stainless Steel
  • Steel
  • Strain Rate
  • X Rays

Fields of Study

  • Physics

Readers

  • Fluid Dynamics.
  • Mechanical Engineering/Mechanics of Materials.
  • Powder metallurgy of Titanium alloys.