Investigation of the Effect of High-Speed Electrothermal Treatment on the Structure of a Welded Joint Made of Low-Alloy Structural Steel

Abstract

The studies’ results of the high-speed electrothermal treatment effect on the structure and hardness of various zones of welded joints made of low-alloy structural steel 10ХСНД (10KhSND) are presented. It is shown that carrying out high-speed electrothermal treatment at 950–980 °C leads to the formation of a homogeneous, fine-grained ferrite-perlite microstructure with practically unchanged hardness values in all zones of the welded joint except for the weld root, where slightly higher values of microhardness are registered.

Keywords

• welded joint
• low-alloy structural steel
• high-speed electrothermal treatment
• structure