A FRACTURE MECHANICS METHOD FOR DETERMINING THE CRACK PROPAGATION RESISTANCE OF EMBRITTLED ALUMINUM BICRYSTALS

A fracture mechanics testing method has been adapted to the study of the crack propagation resistance of high purity aluminum bicrystals which fail under liquid metal embrittlement conditions. The tapered double cantilever beam fracture test makes it possible to determine the threshold crack extension force for a propagating crack and the crack velocity as a function of driving force above this threshold. Modifications of this test have been made so that it can be used to determine crack velocity for 99,99+ percent pure aluminum bicrystals in a Hg-3a/o Ga atmosphere. The test is shown to be reproducible, and variations due to differences in crystallographic orientation of the bicrystals are attainable.

• Corporate Authors:

  American Society for Testing and Materials (ASTM)

  100 Barr Harbor Drive, P.O. Box C700
  West Conshohocken, PA  United States  19428-2957
• Authors:
  • Kargol, J A
  • ALBRIGHT, D L
• Publication Date: 1975-5

Media Info

• Features: Figures; References;
• Pagination: p. 173-178
• Serial:
  • ASTM Journal of Testing and Evaluation
  • Volume: 3
  • Issue Number: 3
  • Publisher: Federal Highway Administration

Subject/Index Terms

• TRT Terms: Aluminum; Beams; Concrete tests; Cracking; Embrittlement; Flexural strength; Fracture mechanics; Rock crystals; Structural tests; Testing
• Uncontrolled Terms: Crack propagation; Fracture
• Old TRIS Terms: Liquid metals
• Subject Areas: Bridges and other structures; Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00096264
• Record Type: Publication
• Report/Paper Numbers: Tech Note
• Files: TRIS
• Created Date: Jul 15 1975 12:00AM