Residual Stresses in Uniaxial Cyclic Loaded Pearlitic Lamellar Graphite Iron

R.L. Peng; J. Moverare; R.L. Peng; J. Moverare

doi:10.21741/9781945291173-12

Residual Stresses in Uniaxial Cyclic Loaded Pearlitic Lamellar Graphite Iron

M. Lundberg, J. Saarimäki, R.L. Peng, J.J. Moverare

Abstract. The mechanisms behind residual stress generation have been a topic of interest for quite some time since it is well-known that residual stresses can benefit the fatigue life of components. We have studied the residual stresses in lamellar graphite iron generated by fatigue damage. Cylindrical test specimens, with close to zero residual stresses of fully pearlitic lamellar graphite iron, manufactured and subjected to uniaxial load controlled cyclic loading, have been investigated. The load conditions used were: pure tension, pure compression, and alternating tension/compression over one thousand cycles. Measurements were performed using a four-circle goniometer Seifert X-ray machine equipped with a linear sensitive detector and a Cr-tube. Evaluation of the residual stresses were conducted using the sin²Ψ-method on the α-Fe {211} diffraction peak together with material removal technique to obtain depth profiles.

Keywords
Residual Stress, XRD, Lamellar Graphite Iron

Published online 12/22/2016, 6 pages
Copyright © 2016 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: M. Lundberg, J. Saarimäki, R.L. Peng, J.J. Moverare, ‘Residual Stresses in Uniaxial Cyclic Loaded Pearlitic Lamellar Graphite Iron’, Materials Research Proceedings, Vol. 2, pp 67-72, 2017

DOI: https://dx.doi.org/10.21741/9781945291173-12

The article was published as article 12 of the book Residual Stresses 2016

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

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Residual Stresses in Uniaxial Cyclic Loaded Pearlitic Lamellar Graphite Iron

M. Lundberg, J. Saarimäki, R.L. Peng, J.J. Moverare

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Abstract. The mechanisms behind residual stress generation have been a topic of interest for quite some time since it is well-known that residual stresses can benefit the fatigue life of components. We have studied the residual stresses in lamellar graphite iron generated by fatigue damage. Cylindrical test specimens, with close to zero residual stresses of fully pearlitic lamellar graphite iron, manufactured and subjected to uniaxial load controlled cyclic loading, have been investigated. The load conditions used were: pure tension, pure compression, and alternating tension/compression over one thousand cycles. Measurements were performed using a four-circle goniometer Seifert X-ray machine equipped with a linear sensitive detector and a Cr-tube. Evaluation of the residual stresses were conducted using the sin²-method on the -Fe {211} diffraction peak together with material removal technique to obtain depth profiles.

Keywords
Residual Stress, XRD, Lamellar Graphite Iron

DOI: https://dx.doi.org /10.21741/9781945291173-12

The article was published as article 12 of the book Residual Stresses 2016