Intermittent Yielding Behavior of Welded Mild Steel: A Thermomechanical Study
Source abstract
Abstract
The aim of this work is to study the intermittent Luders yielding behavior of TIG welded IS 2062 grade E250 B mild steel subjected to uniaxial tensile deformation based on the thermomechanical couplings across the local zones. Heat power and strain rate evolutions clearly reveal the differences in the Luders yielding behavior of the zone encompassing weld and heat affected zones and the base metal zone. Analysis of the rate of the energy conversions confirms the plastic deformation of the weld and heat affected zones (with bainite and acicular ferrite phases) by both stable and unstable Luders bands, although relatively less when compared to the base metal zone with ferrite and pearlite phases. During strain hardening, unlike the base metal zones, fraction of plastic power stored in the zone encompassing weld and heat affected zones is less than that of the dissipated heat power.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Microstructure and Mechanical Properties of Steels · Metal Forming Simulation Techniques · Welding Techniques and Residual Stresses
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