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Title: Determination of residual stress in a microtextured α titanium component using high-energy synchrotron X-rays

Abstract

A shrink-fit sample is manufactured with a Ti-8Al-1Mo-1V alloy to introduce a multiaxial residual stress field in the disk of the sample. A set of strain and orientation pole figures are measured at various locations across the disk using synchrotron high-energy X-ray diffraction. Two approaches—the traditional sin2Ψ method and the bi-scale optimization method—are taken to determine the stresses in the disk based on the measured strain and orientation pole figures, to explore the range of solutions that are possible for the stress field within the disk. While the stress components computed using the sin2Ψ method and the bi-scale optimization method have similar trends, their magnitudes are significantly different. Lastly, it is suspected that the local texture variation in the material is the cause of this discrepancy.

Authors:
 [1];  [2];  [3];  [4];  [3]
  1. Argonne National Lab. (ANL), Lemont, IL (United States)
  2. McMaster Univ., Hamilton, ON (Canada)
  3. Cornell Univ., Ithaca, NY (United States)
  4. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
US Air Force Office of Scientific Research (AFOSR); USDOE
OSTI Identifier:
1339303
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Strain Analysis for Engineering Design
Additional Journal Information:
Journal Volume: 51; Journal Issue: 5; Journal ID: ISSN 0309-3247
Publisher:
SAGE
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; diffraction; high energy synchrotron x-ray; lattice strain; multi-scale; residual stress; titanium alloy

Citation Formats

Park, Jun -Sang, Ray, Atish K., Dawson, Paul R., Lienert, Ulrich, and Miller, Matthew P. Determination of residual stress in a microtextured α titanium component using high-energy synchrotron X-rays. United States: N. p., 2016. Web. doi:10.1177/0309324716640419.
Park, Jun -Sang, Ray, Atish K., Dawson, Paul R., Lienert, Ulrich, & Miller, Matthew P. Determination of residual stress in a microtextured α titanium component using high-energy synchrotron X-rays. United States. doi:10.1177/0309324716640419.
Park, Jun -Sang, Ray, Atish K., Dawson, Paul R., Lienert, Ulrich, and Miller, Matthew P. Mon . "Determination of residual stress in a microtextured α titanium component using high-energy synchrotron X-rays". United States. doi:10.1177/0309324716640419. https://www.osti.gov/servlets/purl/1339303.
@article{osti_1339303,
title = {Determination of residual stress in a microtextured α titanium component using high-energy synchrotron X-rays},
author = {Park, Jun -Sang and Ray, Atish K. and Dawson, Paul R. and Lienert, Ulrich and Miller, Matthew P.},
abstractNote = {A shrink-fit sample is manufactured with a Ti-8Al-1Mo-1V alloy to introduce a multiaxial residual stress field in the disk of the sample. A set of strain and orientation pole figures are measured at various locations across the disk using synchrotron high-energy X-ray diffraction. Two approaches—the traditional sin2Ψ method and the bi-scale optimization method—are taken to determine the stresses in the disk based on the measured strain and orientation pole figures, to explore the range of solutions that are possible for the stress field within the disk. While the stress components computed using the sin2Ψ method and the bi-scale optimization method have similar trends, their magnitudes are significantly different. Lastly, it is suspected that the local texture variation in the material is the cause of this discrepancy.},
doi = {10.1177/0309324716640419},
journal = {Journal of Strain Analysis for Engineering Design},
number = 5,
volume = 51,
place = {United States},
year = {2016},
month = {5}
}

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