Evaluation of Fracture Toughness for P355NH Steel Subjected to Thermal Cycles Simulation

Abstract:

The thermal cycles simulator of welding is a complex equipment that reproduces in a specimen thermal cycles of the type caused in the HAZ by welding processes.In this paper, it is presented a comparison between the results obtained by welded joints and thermal cycle simulator specimens, from the material P355NH of 22 mm thickness for pressure vessels. Two types of thermal cycle simulator specimens were used: one specimen without post-simulation heat treatment and one specimen with post-simulation heat treatment.For the welded specimens Mn3Ni1CrMo filler material was used.This paper offers information about the impact energy of specific areas of the welded joints, both for butt welding and thermal cycle simulator specimens.A good correlation was observed between the results of thermal cycle simulation with post-simulation heat treatment and the results obtained by welding.

• Periodical: Advanced Materials Research (Volume 1111)
• Pages: 193-198
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1111.193
• Online since: July 2015
• Authors: Sergiu Valentin Galaţanu*, Romulus Pascu, Nicolae Faur
• Keywords: Fracture Toughness, Impact Energy, P355NH Steel, Thermal Cycles Simulation, Welding

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DOI: 10.3403/30187559

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