Investigating the Effects of Mitigation Techniques on Residual Stress and Microstructure of HSLA Welds
H. Alipooramirabad, R. Ghomashchi, A. Paradowska, M. Reiddownload PDF
Abstract. Post-weld heat treatment is often required for pressure vessel and piping components for relaxing residual stresses and increasing the resistance to brittle fracture. The present study employed neutron diffraction to examine the effects of conventional post-weld heat treatment (PWHT) on the residual stresses in multi-pass, high-strength, low-alloy-steel, weld joints made by combined Modified Short Arc Welding (MSAW) and Flux Cored Arc welding (FCAW) processes. Residual stresses in excess of yield strength were developed in the Heat Affected Zone (HAZ) and the weld metal of the as-welded specimen (particularly the upper layers of the weld) which were reduced significantly as a result of applying PWHT. Also PWHT lead to substantial changes in the microstructural characteristics of high-strength, low-alloy-steel welds.
Microstructural Characterization, HSLA Welds, Neutron Diffraction, PWHT, Residual Stress
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: H. Alipooramirabad, R. Ghomashchi, A. Paradowska, M. Reid, ‘Investigating the Effects of Mitigation Techniques on Residual Stress and Microstructure of HSLA Welds’, Materials Research Proceedings, Vol. 2, pp 563-568, 2017
The article was published as article 95 of the book Residual Stresses 2016
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