Stress corrosion cracking behavior of austenitic stainless steel in 3.5 wt % sodium chloride (NaCI) solution
Abstract
Stress corrosion cracking is the formation of brittle cracks in a normally sound
material through the simultaneous action of a tensile stress and a corrosive environment.
Stress corrosion cracking occurs when there have stress applied and chemical reaction to
the samples. There have two types of cracking which intergranular and transgranular
morphology. Mechanical properties of these specimens are investigated by using tensile
test. This test is conducted by Universal Testing Machine (UTM). Specimens are immersed
in 3.5 wt % NaCl for variety times which 10, 200, 400, 600, 800, 1000, and 1200 hours
because to make data comparison. Microstructure analysis is conducted by using Scanning
Electron Microscopy and Smile View software to determine the crack propagation on the
specimen’s surface. Graph Crack lines vs Time was plotted to show the comparison when
immersed in 3.5 wt % NaCl for variety time.