Residual Stress Distributions in Bi-Metal (Ferritic to Austenitic Steel) Joints Made by Laser Welding

Jesus Ruiz-Hervias; Mihaela Iordachescu; Vladimir Luzin; Michael Law; Danut Iordachescu; José Luis Ocaña

doi:10.4028/www.scientific.net/MSF.772.181

Paper Titles

In-Depth Distribution of Stresses Measured by Multireflection Grazing Incidence Diffraction
p.143

Laser Surface Hardening of Steel: Effect of Process Atmosphere on the Microstructure and Residual Stresses
p.149

Residual Stress in Coatings Produced by Cold Spray
p.155

Study of Interactive Stresses in Thin WC-Co Coating of Thick Mild Steel Substrate Using High-Precision Neutron Diffraction
p.161

Through Thickness Residual Stress Measurements by Neutron Diffraction and Hole Drilling in a Single Laser-Peened Spot on a Thin Aluminium Plate
p.167

Internal Residual Strain Distribution in Chromium-Molybdenum Steel after Carburizing and Quenching Measured by Neutron Strain Scanning
p.173

Residual Stress Distributions in Bi-Metal (Ferritic to Austenitic Steel) Joints Made by Laser Welding
p.181

Characterisation of Residual Stress State and Distortion in Welded Plates Stress Engineered by Local Mechanical Tensioning
p.187

Investigation of Residual Stress/Strain and Texture in a Large Dissimilar Metal Weld Using Synchrotron Radiation and Neutrons
p.193

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Residual Stress Distributions in Bi-Metal (Ferritic to Austenitic Steel) Joints Made by Laser Welding

Abstract:

In this work, autogenous laser welding was used to join thin plates of low carbon ferritic and austenitic stainless steel. Due to the differences in the thermo-physical properties of base metals, this kind of welds exhibit a complex microstructure, which frequently leads to an overall loss of joint quality. Four welded samples were prepared by using different sets of processing parameters, with the aim of minimizing the induced residual stress field. Microstructural characterization and residual strain scanning (by neutron diffraction) were used to assess the joints’ features.