The Wear Responses of the Welded Joints of ASTM A335 Gr. P11 Steels Affected by Accelerated Flow Corrosion

Abstract

This study shows the effects of wear on welded joints of ASTM A355 Gr. P11 “Seamless Ferritic Alloy-Steel Pipe for High Temperature Service” steels subjected to the welding procedures established by codes B31.1 and ASME III. The standard welding procedure establishes the following steps: a preheating process, welding and post-weld heat treatment. This generates a wear behavior that depends on the thermal cycles to which the different areas of the joint are subjected. The objective of this article was the study of the behavior against the flow-accelerated corrosion of the welded joints of a low alloy steel. There is the possibility of establishing welding procedures other than those established, while maintaining the safety ranges, depending on the field of application for the steel.

Use of the Ball-Cratering Method to Assess the Wear Resistance of a Welded Joint of XAR400 Steel

“…Unlike these studies, however, published findings on abrasion resistance of welded joints were of a global character due to the limitations of the research methods. Based on various standards, e.g., ASTM G65, ISO 28080: 2021 (rubber wheel—dry sand), GOST 23.208-79, ASTM G99 and DIN ISO 7148-1 (pin-on-disk) [ 21 , 22 , 23 ], these measurements were carried out in such a way that they overlapped different zones of the welded joint and hence the determined wear resistance appeared to be somewhat averaged. In order to distinguish between tribological properties of different parts of such a joint, the test area must entirely lie within the zone of interest.…”