In Situ Stress Measurements during Welding Process

Tatsumi Hirano; Daiko Takamatsu; Kosuke Kuwabara; Shuo Yuan Zhang; Takahisa Shobu; Ayumi Shiro; Masugu Sato

doi:10.4028/www.scientific.net/MSF.905.137

Paper Titles

In Situ EDXRD Study of MAG-Welding Using LTT Weld Filler Materials under Structural Restraint
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In Situ Experiment for Laser Beam Welding of Ti Alloys Using High-Energy X-Rays
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Designing and Validating Parallel Wire Suspension Bridge Wire Strands for Neutron Diffraction Stress Mapping
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Experimental Comparison of In-Depth Residual Stresses Measured with Neutron and X-Ray Diffraction with a Numerical Stress Relaxation Correction Method
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In Situ Stress Measurements during Welding Process
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Minimizing and Characterizing Uncertainties in Neutron Strain Measurements with Special Attention to Grain Size Effects
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New Developments of the Materials Science Diffractometer STRESS-SPEC
p.151

Scanning Three-Dimensional X-Ray Diffraction Microscopy with a High-Energy Microbeam at SPring-8
p.157

Neutron Through-Thickness Stress Measurements in Coatings with High Spatial Resolution
p.165

HomeMaterials Science ForumMaterials Science Forum Vol. 905In Situ Stress Measurements during Welding Process

In Situ Stress Measurements during Welding Process

Abstract:

Welding technologies are indispensable for fabricating various industrial structures and must be highly reliable. Since tensile residual stresses at surface after welding cause crack progress, it is important to understand how stresses built up during the welding process in order to optimize final residual stresses as reduced tensile or introduced compressive stresses. Therefore, we conducted in-situ measurements of phase transformations, stresses and temperatures during tungsten inert gas (TIG) welding to understand how stresses built up. X-ray diffraction rings were detected per 0.1 sec during TIG welding by using a large-area two-dimensional detector and the accuracy of the stress analysis was estimated to be 8 MPa using the sin2ψ technique. In this paper, we described the phase transformations of ferrite low-carbon rolled steel and the changes in stresses during TIG welding.

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Periodical:

Materials Science Forum (Volume 905)

Pages:

137-142

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.905.137

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Online since:

August 2017

Authors:

Tatsumi Hirano*, Daiko Takamatsu, Kosuke Kuwabara, Shuo Yuan Zhang, Takahisa Shobu, Ayumi Shiro, Masugu Sato

Keywords:

In Situ Stress Measurement, In Situ Synchrotron X-Ray Diffraction, Welding

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