Method for determining the hardness of strain hardening articles of tungsten-nickel-iron alloy

Patent · Wed Jul 29 00:00:00 EDT 1981

OSTI ID:5228621

Wallace, S. A.

The present invention is directed to a rapid nondestructive method for determining the extent of strain hardening in an article of tungsten-nickel-iron alloy. The method comprises saturating the article with a magnetic field from a permanent magnet, measuring the magnetic flux emanating from the article, comparing the measurements of the magnetic flux emanating from the article with measured magnetic fluxes from similarly shaped standards of the alloy with known amounts of strain hardening to determine the hardness.

• DOE Contract Number: W-7405-ENG-26
• Assignee: Dept. of Energy
• Application Number: ON: DE82013595
• OSTI ID: 5228621
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
IRON ALLOYS
STRAIN HARDENING
NICKEL ALLOYS
NONDESTRUCTIVE TESTING
TUNGSTEN ALLOYS
MAGNETIC FLUX
ALLOYS
HARDENING
MATERIALS TESTING
TESTING
360103* - Metals & Alloys- Mechanical Properties