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Title: Nondestructive detection of an undesirable metallic phase, T.sub.1, during processing of aluminum-lithium alloys

Abstract

A method is disclosed for detecting the T.sub.1 phase in aluminum-lithium alloys through simultaneous measurement of conductivity and hardness. In employing eddy current to measure conductivity, when the eddy current decreases with aging of the alloy, while the hardness of the material continues to increase, the presence of the T.sub.1 phase may be detected.

Inventors:
 [1];  [2];  [1];  [3];  [1];  [1]
+ Show Inventor Affiliations
  1. Ames, IA
  2. Maryland Heights, MO
  3. Nevada, IA
Issue Date:
Research Org.:
Ames Laboratory (AMES), Ames, IA; Iowa State Univ., Ames, IA (United States)
OSTI Identifier:
867480
Patent Number(s):
4947117
Application Number:
07/293,120
Assignee:
Iowa State University Research Foundation (Ames, IA)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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DOE Contract Number:  
W-7405-ENG-82
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
nondestructive; detection; undesirable; metallic; phase; processing; aluminum-lithium; alloys; method; disclosed; detecting; simultaneous; measurement; conductivity; hardness; employing; eddy; current; measure; decreases; aging; alloy; material; continues; increase; presence; detected; metallic phase; simultaneous measurement; eddy current; lithium alloy; nondestructive detection; employing eddy; undesirable metal; aluminum-lithium alloys; /324/

Citation Formats

Buck, Otto, Bracci, David J, Jiles, David C, Brasche, Lisa J. H., Shield, Jeffrey E, and Chumbley, Leonard S. Nondestructive detection of an undesirable metallic phase, T.sub.1, during processing of aluminum-lithium alloys. United States: N. p., 1990. Web.
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Buck, Otto, Bracci, David J, Jiles, David C, Brasche, Lisa J. H., Shield, Jeffrey E, & Chumbley, Leonard S. Nondestructive detection of an undesirable metallic phase, T.sub.1, during processing of aluminum-lithium alloys. United States.
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Buck, Otto, Bracci, David J, Jiles, David C, Brasche, Lisa J. H., Shield, Jeffrey E, and Chumbley, Leonard S. Tue . "Nondestructive detection of an undesirable metallic phase, T.sub.1, during processing of aluminum-lithium alloys". United States. https://www.osti.gov/servlets/purl/867480.
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@article{osti_867480,
title = {Nondestructive detection of an undesirable metallic phase, T.sub.1, during processing of aluminum-lithium alloys},
author = {Buck, Otto and Bracci, David J and Jiles, David C and Brasche, Lisa J. H. and Shield, Jeffrey E and Chumbley, Leonard S},
abstractNote = {A method is disclosed for detecting the T.sub.1 phase in aluminum-lithium alloys through simultaneous measurement of conductivity and hardness. In employing eddy current to measure conductivity, when the eddy current decreases with aging of the alloy, while the hardness of the material continues to increase, the presence of the T.sub.1 phase may be detected.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1990},
month = {8}
}
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