Kinetic Oxidation Analysis of Oxidized As-cast ER5356 Filler Metal

Abstract

The purposes of this experiment are to study the effects of corrosion behavior of an as-cast ER5356 filler metal and to define the weight gain in kinetic oxidation analysis. The specimen was subjected to high temperature oxidation in a box furnace in flowing air gas. The oxidation test was performed between temperatures of 300°C until 600°C. From this investigation, oxidation weight change measurement showed that the breakaway oxidation was occurred at 500°C after 40 hours exposure. It shows that at 500°C, the welded alloy failed to form the protective oxide layer and suffered rapid breakaway oxidation. The decreasing of weld quality was observed due to the scale formation of oxide metal that will be discussed in terms of morphology and growth analysis.