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

Wallace, Steven A

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

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Abstract

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.

Inventors:

Wallace, Steven A ^[1]

Knoxville, TN

Issue Date:: Sun Jan 01 00:00:00 EST 1984

Research Org.:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

OSTI Identifier:: 865244

Patent Number(s):: 4481470

Assignee:: United States of America as represented by United States (Washington, DC)

Patent Classifications (CPCs):: G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES

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G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
G01N27/72 - by investigating magnetic variables

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DOE Contract Number:: W-7405-ENG-26

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: method; determining; hardness; strain; hardening; articles; tungsten-nickel-iron; alloy; directed; rapid; nondestructive; extent; article; comprises; saturating; magnetic; field; permanent; magnet; measuring; flux; emanating; comparing; measurements; measured; fluxes; similarly; shaped; standards; amounts; determine; nondestructive method; tungsten-nickel-iron alloy; method comprises; magnetic flux; permanent magnet; magnetic field; strain hardening; method comprise; similarly shaped; iron alloy; /324/

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                    Wallace, Steven A. Method for determining the hardness of strain hardening articles of tungsten-nickel-iron alloy.  United States: N. p., 1984. 
        Web.

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                    Wallace, Steven A. Method for determining the hardness of strain hardening articles of tungsten-nickel-iron alloy.  United States.

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                    Wallace, Steven A. Sun .  
        "Method for determining the hardness of strain hardening articles of tungsten-nickel-iron alloy".  United States.  https://www.osti.gov/servlets/purl/865244.

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@article{osti_865244,

  title        = {Method for determining the hardness of strain hardening articles of tungsten-nickel-iron alloy},

  author       = {Wallace, Steven A},

  abstractNote = {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.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Sun Jan 01 00:00:00 EST 1984},

  month        = {Sun Jan 01 00:00:00 EST 1984}

}

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

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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.
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