Experimental and Computational Analysis of Residual Stress and Mechanical Hardening in Welded High-Alloy Steels

Experimental and Computational Analysis of Residual Stress and Mechanical Hardening in Welded High-Alloy Steels

N. Hempel, T. Nitschke-Pagel, J. Rebelo-Kornmeier, K. Dilger

Abstract. Due to the thermal cycle during welding, plastic deformation can occur in the heat-affected zone. After cooling, the yield stress can be locally increased due to the hardening effect and thus permits higher residual stresses in these areas. Therefore, a precise description of the hardening behavior in welding simulations is indispensable for reliably predicting residual stresses. Thus, this work is dedicated to the characterization of mechanical hardening in welded high-alloy steels and its effects on the residual stress state. Numerical welding simulations are performed using different hardening models and the outcomes in terms of both the residual stress and the hardening state are compared to experimental results gained by laboratory X-ray and neutron diffraction.

Keywords
Welding, Residual Stress, Mechanical Hardening, Austenitic Steel, Neutron Diffraction, X-Ray Diffraction, Numerical Welding Simulation

Published online 9/11/2018, 6 pages
Copyright © 2018 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: N. Hempel, T. Nitschke-Pagel, J. Rebelo-Kornmeier, K. Dilger, ‘Experimental and Computational Analysis of Residual Stress and Mechanical Hardening in Welded High-Alloy Steels’, Materials Research Proceedings, Vol. 6, pp 227-232, 2018

DOI: http://dx.doi.org/10.21741/9781945291890-36

The article was published as article 36 of the book Residual Stresses 2018

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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