Influence of the stress state on the structure and properties of welded steel and alloy structures

The residual stress due to welding in steel and alloy structures is analyzed. The greatest residual stress is produced by cooling of the welded structure. The results of calculations are in satisfactory agreement with the experimental deformation of the structure in welding on a test bench. The test...

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Bibliographic Details
Published in:Steel in translation 2016-04, Vol.46 (4), p.256-259
Main Authors: Murav’ev, V. I., Bakhmatov, P. V., Pletnev, N. O., Debelyak, A. A.
Format: Article
Language:English
Subjects:
Alloy steels
Chemistry and Materials Science
Deformation
Materials Science
Mathematical models
Residual stress
Steel structures
Stresses
Structural steels
Welding
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Summary:The residual stress due to welding in steel and alloy structures is analyzed. The greatest residual stress is produced by cooling of the welded structure. The results of calculations are in satisfactory agreement with the experimental deformation of the structure in welding on a test bench. The tests reveal the direction of the internal stress and permit assessment of the geometry of parts on the basis of a model of the temperature fields in the butt welding of steel and titanium-alloy workpieces. A coercimeter may be used to assess the stress state of the material and its defect content. By that means, it is possible to predict the structural state and properties of weld joints. The dynamics of welding deformation may be understood on the basis of the internal residual stress and the structural transformations produced by the welding process.
ISSN:0967-0912
1935-0988
DOI:10.3103/S0967091216040070