The Shapes and Compositions of Non-Metallic Inclusions in Mild Steel Weld Metals (Report 1)

Abstract

Non-metallic inclusions in mild steel weld metals were analysed by alcohlic iodine method and observed by optical microscope. It was found that larger inclusion particles were sphere or angular (crystal) in shapes and MnO-SiO₂ in chmical compositions. Auther considered the mechanism of formation of inclusion particles in weld metal and explained relation between these shapes and chemical compositions.