Investigation of chromium white iron weld deposits resistant to abrasive wear

Abstract

Abrasion is the dominant wear mechanism impacting over 50% of industrial components deterioration. Weld deposits have found its application in refurbishing industrial components with wide spectrum of processes from Stick Electrodes, Submerged Arc, Flux Cored (gas, self shielded), GMAW, Electroslag, Plasma Arc Transfer, Oxy-fuel etc. including manual, semiautomatic to fully robotic automated processes. This investigation is focused on alloys belonging to Chromium White Iron weld deposits including Martensitic Iron, Austenitic Chromium Carbide Iron, Complex Chromium Carbide Iron, Martensitic chromium carbide iron. Over 90 weld deposits were investigated with reference to hardness, microstructure and abrasive wear loss (WL) to ASTM G65 method. Abrasive Resistant Carbon Equivalent (CEAbr) was established with numerous established relationships between CEAbr and WL, WL and % hypoeutectic carbides, WL and Hardness, hardness and % hypoeutectic carbides, hardness and CEAbr.