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Micrographic detection of plastic deformation in nickel base alloys

Patent ·
OSTI ID:6369295
;
A method for detecting low levels of plastic deformation in metal articles comprising electrolytically etching a flow free surface of the metal article with nital at a current density of less than about 0.1 amp/cm/sup 2/ and microscopically examining the etched surface to determine the presence of alternating striations. The presence of striations indicates plastic deformation in the article.
Assignee:
Dept. of Energy
Patent Number(s):
US 4445988
OSTI ID:
6369295
Country of Publication:
United States
Language:
English

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Related Subjects

36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
ALLOYS
CURRENT DENSITY
DEFORMATION
ETCHING
MATERIALS TESTING
MECHANICAL PROPERTIES
MICROSCOPY
NICKEL ALLOYS
NICKEL BASE ALLOYS
PLASTICITY
SURFACE FINISHING
TESTING