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Measurement of Residual Stresses by X-ray Diffraction Near Simulated Heat Affected Zones in Austenitic Stainless Steels*

Published online by Cambridge University Press:  06 March 2019

V. S. Iyer ,
R. W. Hendricks  and
S. A. David
V. S. Iyer
Affiliation:
Materials Engineering Department Virginia Polytechnic Institute and State University Blacksburg, Virginia, 24061
R. W. Hendricks
Affiliation:
Materials Engineering Department Virginia Polytechnic Institute and State University Blacksburg, Virginia, 24061
S. A. David
Affiliation:
Metals and Ceramics Division Oak Ridge National Laboratory Oak Ridge, Tennessc 37830
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Abstract

Simulated heat-affected zones (HAZs) were made in austenitic sta.inless steel specimens using a Gleeble. The samples were heated to temperatures as high as 1100°C by computer controlled resistance heating. By controlling the heating rate, maximum temperature, and cooling rate, a wide range of residual stresses were introduced in the specimens. Stress measurements were made using X-ray diffraction. It was found that significant stress gradients were produced in the simulated HAZs, and that all stresses were compressive in nature, both in the longitudinal and transverse directions. These results are not representative of the residual stresses determined in the HAZs of real welds, thus calling into question some aspects of the role of the Gleeble in such simulations.

Type
XII. Analysis of Stress and Fracture by Diffraction Methods
Information
Advances in X-Ray Analysis , Volume 34: Thirty-Ninth Annual Conference on Applications of X-ray Analysis, July 30 - August 3, 1990 , 1990 , pp. 623 - 631
Copyright
Copyright © International Centre for Diffraction Data 1990

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Footnotes

*

This work was supported by the 1989 and 1990 ORNL/OKAU/SURA Summer Research Institutes and by the Institute of Materials Science and Engineering of Virginia's Center for Innovative Technology.

References

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