Non-Destructive Evaluation of Defects in Structural Materials Using Long-Wavelength Neutrons.

Abstract

Small-angle scattering profiles from HSLA steels (Fe-0.05C-1.0Mn-0.12Nb-0.06Al) annealed at various temperatures ranging between 660 C and 1000 C were obtained. The values obtained from Guinier analysis and size distribution calculations were compared with those obtained from electron micrographic observations, and were shown to agree satisfactorily. Similar data were obtained from samples of Ni-P amorphous glasses annealed at 295 deg, 400 deg, and 500 deg C. No crystallization effects were observed from 295 C sample. The Guinier plots of the 400 deg and 500 deg C samples indicate good agreement with the expected behavior due to annealing of the amorphous state; namely, the higher annealing temperatures correspond to larger microcrystallite sizes.

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Document Details

Document Type
Technical Report
Publication Date
May 07, 1980
Accession Number
ADA086269

Entities

People

  • B. B. Rath
  • M. Fatemi

Organizations

  • United States Naval Research Laboratory

Tags

DTIC Thesaurus Topics

  • Alloys
  • Data Analysis
  • Data Processing
  • Destructive Tests
  • Detection
  • Detectors
  • Long Wavelengths
  • Materials
  • Measurement
  • Military Research
  • Neutron Scattering
  • Neutrons
  • Particle Size
  • Particles
  • Scattering
  • Test And Evaluation
  • Test Methods

Fields of Study

  • Materials science

Readers

  • Materials Science and Engineering.

Technology Areas

  • Microelectronics