MEASUREMENT OF RESIDUAL STRESS, PLASTICITY AND FATIGUE IN 350 WT STEELS BY NEUTRON DIFFRACTION

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Authors
  1. Holden, T.M.
  2. Fox, J.H.
  3. Pang, J.
  4. Mason, T.E.
Corporate Authors
Toronto Univ, Toronto ONT (CAN) Dept of Physics;Defence Research Establishment Atlantic, Dartmouth NS (CAN)
Abstract
Neutron diffraction measurements have been carried out on 350 WT steel following cyclic loading to investigate the sensitivity of diffraction to fatigue loading. The first series of experiments showed that the measured line-broadening and residual strain correlated well with the degree of plastic deformation in the samples. The second series of experiments were designed to avoid plastic deformation during fatigue loading. Neither the strain nor the line-broadening were found to be correlated with fatigue parameters. A third set of experiments was designed to measure the strain response to applied stress below and above the yield point during tensile testing. The results have a bearing on the interpretation of any diffraction measurements of residual stress on engineering components.
Report Number
DREA-SR-97-002-PAP-38 — CONTAINED IN 98-00986
Date of publication
01 Oct 1997
Number of Pages
12
DSTKIM No
98-01024
CANDIS No
507241
Format(s):
Hardcopy;Document Image stored on Optical Disk

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