Insights Gained Through Image Analysis During In-Situ Micromechanical Experiments (Preprint)

Abstract

A custom in-situ testing system has been developed to allow the quantitative study of deformation behavior in microsized specimens with compressive or tensile loading, which allows for ready control of the lateral test frame stiffness. Micromechanical tests have been conducted within the chamber of an SEM, which allows concurrent visualization of plastic flow during the mechanical test. Three distinct experiments are presented for the single crystal nickel-base superalloy Rene N5, each carried out under the same loading orientation on samples of similar size. Very different mechanical responses are reflected in the stress-strain curves for these experiments that can be understood by correlating specimen morphology change during plastic flow with the test boundary conditions.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 2011
Accession Number
ADA553461

Entities

People

  • M. D. Uchic
  • Paul A. Shade
  • Robert W. Wheeler

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Air Force
  • Air Force Facilities
  • Air Force Research Laboratories
  • Alloys
  • Crystal Structure
  • Crystals
  • Flow
  • Materials
  • Military Research
  • Orientation (Direction)
  • Plastic Flow
  • Single Crystals
  • Stiffness
  • Strain Hardening
  • Stress Strain Relations
  • Stresses
  • Yield Strength

Readers

  • Materials Science (Mechanical Engineering).
  • Mechanical Engineering/Mechanics of Materials.
  • Nanofabrication and Microfabrication.