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Title: Nondestructive method and apparatus for imaging grains in curved surfaces of polycrystalline articles

Abstract

A nondestructive method, and associated apparatus, are provided for determining the grain flow of the grains in a convex curved, textured polycrystalline surface. The convex, curved surface of a polycrystalline article is aligned in a horizontal x-ray diffractometer and a monochromatic, converging x-ray beam is directed onto the curved surface of the polycrystalline article so that the converging x-ray beam is diffracted by crystallographic planes of the grains in the polycrystalline article. The diffracted x-ray beam is caused to pass through a set of horizontal, parallel slits to limit the height of the beam and thereafter. The linear intensity of the diffracted x-ray is measured, suing a linear position sensitive proportional counter, as a function of position in a direction orthogonal to the counter so as to generate two dimensional data. An image of the grains in the curved surface of the polycrystalline article is provided based on the two-dimensional data.

Inventors:
Publication Date:
Research Org.:
Oak Ridge National Lab., TN (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
208303
Patent Number(s):
PATENTS-US-A8117856
Application Number:
ON: DE96004913; PAN: 8-117,856
Assignee:
Dept. of Energy ORNL; SCA: 440100; PA: EDB-96:067193; NTS-96:012744; SN: 96001528388
DOE Contract Number:  
AC05-84OR21400
Resource Type:
Patent Application
Resource Relation:
Other Information: PBD: 8 Sep 1993
Country of Publication:
United States
Language:
English
Subject:
44 INSTRUMENTATION, INCLUDING NUCLEAR AND PARTICLE DETECTORS; POLYCRYSTALS; GRAIN ORIENTATION; X-RAY DIFFRACTOMETERS; DESIGN; INVENTIONS; CRYSTAL STRUCTURE; X-RAY DIFFRACTION; CRYSTALLOGRAPHY; DIFFRACTION METHODS

Citation Formats

Carpenter, D.A. Nondestructive method and apparatus for imaging grains in curved surfaces of polycrystalline articles. United States: N. p., 1993. Web.
Carpenter, D.A. Nondestructive method and apparatus for imaging grains in curved surfaces of polycrystalline articles. United States.
Carpenter, D.A. Wed . "Nondestructive method and apparatus for imaging grains in curved surfaces of polycrystalline articles". United States. https://www.osti.gov/servlets/purl/208303.
@article{osti_208303,
title = {Nondestructive method and apparatus for imaging grains in curved surfaces of polycrystalline articles},
author = {Carpenter, D.A.},
abstractNote = {A nondestructive method, and associated apparatus, are provided for determining the grain flow of the grains in a convex curved, textured polycrystalline surface. The convex, curved surface of a polycrystalline article is aligned in a horizontal x-ray diffractometer and a monochromatic, converging x-ray beam is directed onto the curved surface of the polycrystalline article so that the converging x-ray beam is diffracted by crystallographic planes of the grains in the polycrystalline article. The diffracted x-ray beam is caused to pass through a set of horizontal, parallel slits to limit the height of the beam and thereafter. The linear intensity of the diffracted x-ray is measured, suing a linear position sensitive proportional counter, as a function of position in a direction orthogonal to the counter so as to generate two dimensional data. An image of the grains in the curved surface of the polycrystalline article is provided based on the two-dimensional data.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Sep 08 00:00:00 EDT 1993},
month = {Wed Sep 08 00:00:00 EDT 1993}
}

Patent Application:

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