Multielement ferroboron resisting zinc liquid corrosion and preparation method thereof

Abstract

The invention relates to a multielement ferroboron resisting zinc liquid corrosion and a preparation method thereof. The chemical composition by mass percent is as follows: C less than 0.06, B more than 4.5 and less than 8.5, Si more than 4.0 and less than 5.0, Mn more than 4.5 and less than 5.5, Cr more than 3.5 and less than 5.0, Ni more than 0.8 and less htan 1.5, S less than 0.03, P less than0.03 and the remainder being Fe. The multielement ferroboron of the invention is smelt and cast followed by strain annealing treatment at 250-300 DEG C, thus having high strength, good toughness and outstanding zinc liquid corrosion resistance.

Description

A multi-element iron-boron alloy resistant to zinc liquid corrosion and preparation method thereof technical field The invention relates to a multi-element iron-boron alloy resistant to zinc liquid corrosion and a preparation method thereof, belonging to the technical field of corrosion-resistant materials. Background technique During the processing of zinc particles for electro-galvanized strip steel and the production process of hot-dip galvanized strip steel, the economic loss caused by the premature failure of equipment components due to the strong corrosion of zinc liquid is very alarming. For commonly used iron and steel materials, iron and zinc are miscible metal materials. Therefore, when the iron and steel materials are in contact with the zinc liquid, the iron atoms on the surface will diffuse into the zinc liquid. The macroscopic manifestation is that the iron on the surface is dissolved by the zinc liquid and spread To the low concentration area of ​​iron, resu...

AI Technical Summary

Problems solved by technology

However, borides are brittle and prone to cracks in the as-cast structure, which reduces the mechanical properties of high boron cast steel