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Title: Micrographic detection of plastic deformation in nickel base alloys

Abstract

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.

Inventors:
 [1];  [2]
  1. Schenectady, NY
  2. Clifton Park, NY
Issue Date:
Research Org.:
Knolls Atomic Power Laboratory (KAPL), Niskayuna, NY
OSTI Identifier:
864981
Patent Number(s):
4445988
Assignee:
United States of America as represented by Department of Energy (Washington, DC)
Patent Classifications (CPCs):
C - CHEMISTRY C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES C25F - PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
DOE Contract Number:  
AC12-76SN00052
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
micrographic; detection; plastic; deformation; nickel; base; alloys; method; detecting; levels; metal; articles; comprising; electrolytically; etching; flow; free; surface; article; nital; current; density; amp; cm; microscopically; examining; etched; determine; presence; alternating; striations; indicates; metal articles; plastic deformation; nickel base; base alloy; base alloys; metal article; current density; free surface; etched surface; articles comprising; /205/204/356/

Citation Formats

Steeves, Arthur F, and Bibb, Albert E. Micrographic detection of plastic deformation in nickel base alloys. United States: N. p., 1984. Web.
Steeves, Arthur F, & Bibb, Albert E. Micrographic detection of plastic deformation in nickel base alloys. United States.
Steeves, Arthur F, and Bibb, Albert E. Sun . "Micrographic detection of plastic deformation in nickel base alloys". United States. https://www.osti.gov/servlets/purl/864981.
@article{osti_864981,
title = {Micrographic detection of plastic deformation in nickel base alloys},
author = {Steeves, Arthur F and Bibb, Albert E},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1984},
month = {1}
}

Patent:

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