In the present work, the effect of welding procedure on weldability of conventional high manganese steel compared with the recent developed ladle treated one. This research aims at disclosing the microstructure, hardness, impact toughness and tensile strength of the welded joints. The optical micrograph of the conventional high manganese steel welded joint without cooling between passes shows that the heat affected zone (HAZ) has a high density of carbides formed at the grain boundaries. However, cooling between passes using compressed air resulted in a decrease in the density of carbides formed at the grain boundaries of the HAZ. In the ladle treatment samples, the microstructure shows an increase the density of the eutectic phase of the HAZ as a result of welding without cooling. On the other hand, application of cooling using compressed air between passes results in a low density of the eutectic phase in the HAZ.

Application of cooling between deposited passes resulted in a significant improvement of the impact toughness of weldment in both conventional and ladle treated samples of high manganese steel. The result obtained by SEM observation shows the reduction of both carbides at the grain boundaries in HAZ of conventional high manganese steel and the eutectic phase in HAZ of ladle treated one.

Please login / register to post comments

news in steel

ECS scrap preheating and zero bucket: the most sustainable way to produce steel

The first Danieli Zero-bucket EAF with ECS scrap preheating in China is in operation Chizhou City.

What's new in continuous casting: SMS Concast develops actuator-driven oscillation with direct drives by KOLLMORGEN

Shape is given to the molten steel by the casting die in continuous casting. The casting die can be compared to a mold made of water-cooled copper in which targeted extraction of heat causes the steel to form an outer skin – at first as delicate as a raw egg.

New Scan System with 20-Millimeter Aperture Broadens Product Portfolio

Laser technology manufacturer SCANLAB GmbH is extending its premium-segment product family with the excelliSCAN 20. This new scan system targets exceptionally demanding applications such as micromachining and additive manufacturing (3D printing).

Bucket manufacturer Lennéers chooses Hardox wear plate from SSAB for increased wear resistance and reduced weight

Swedish bucket manufacturer Lennéers uses Hardox wear plate from SSAB in all its products. Hardox abrasion-resistant steel enables Lennéers to deliver top-quality construction and agricultural equipment that is strong, light, and long lasting.