Special features of the formation of bainitic structures of granular morphology in the weld zone of welded joints in high-strength low-alloy steels

Abstract

Morphology and conditions of intermediate granular structure formation in the heat-affected zone at submerged arc welding of the bainitic high-tensile steels are considered. It is shown that austenitizing temperature and type of plastic collapse have considerable influence upon mesoferrite and granular bainite formation under conditions of thermodeformative welding cycles.

Keywords:

• structure
• temperature of austenitizing
• plastic deformation
• arc welding