High pressure rolling of low carbon steel weld seams

One technique for reducing residual stress in welds is high pressure rolling of the weld seam. In this study, a variety of experimental techniques, including microhardness measurements and cross-weld tensile tests with digital image correlation, have been used to characterise the effects of rolling...

Full description

Saved in:
Bibliographic Details
Published inScience and technology of welding and joining Vol. 18; no. 1; pp. 76 - 83
Main Authors Coules, H E, Colegrove, P, Cozzolino, L D, Wen, S W
Format Journal Article
LanguageEnglish
Published 01.01.2013
Subjects
Ferrite
Reduction
Residual stress
Seams
Weld metal
Welded joints
Welding
Online AccessGet full text

Cover

More Information
Summary:One technique for reducing residual stress in welds is high pressure rolling of the weld seam. In this study, a variety of experimental techniques, including microhardness measurements and cross-weld tensile tests with digital image correlation, have been used to characterise the effects of rolling on the mechanical properties and microstructure of the weld material in welded structural steel specimens. It is shown that rolling applied at high temperature, as welding is carried out, promotes the formation of acicular ferrite in the weld metal. This produces a weld material with a greater yield strength and hardness, but slightly reduced impact toughness compared to unrolled welds. Rolling of the weld metal once it has cooled instead causes work-hardening. These effects are discussed as they relate to the use of rolling for weld residual stress reduction.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
content type line 23
ObjectType-Feature-1
ISSN:1362-1718
1743-2936