The formation of structure and phase composition of wear-resistant steels alloyed with titanium

Abstract

The aim of this work was to improve the quality and durability of the surfacing metal by
improving the alloying of powders by optimizing the content of titanium and carbon.
The experiment was conducted by automatic surfacing with the use of experienced alloying powders
under flux АН-22 by wire Св-08A. The main alloying elements used titanium, chromium, manganese.
It is established that the presence of titanium in the amount of 1.6 to 2.0 % when the content of
carbon of 0.4-0.5 % allows to obtain carbon-free matrix with a carbide hardening phase. The hardness of
the deposited metal in comparison with martensitic-troostite structure is reduced slightly to 4...6 HRC.
The developed composition alloying steels for operation under conditions of impactabrasive wear for TIG welding tool containing the alloying system Cr-Mn-Ti iron-based (with a low
content of Mo and V) and provide a high quality of weld metal.