Author:
Liu Yingshuang,Liu Ran,Zhang Dalei,Xing Shaohua,Dou Xiaohui,Zhang Xinwei,He Zonghao
Abstract
Purpose
The corrosion behaviour of titanium alloy surface when fluid with different flow rates flows through welded joints with different residual heights was explored.
Design/methodology/approach
The experiment uses a combination of array electrodes and simulation.
Findings
It is found that when the weld reinforcement exists, the corrosion tendency of both ends of the weld metal is greater than that of other parts of the welded joint due to the influence of high turbulence kinetic energy and shear stress. The presence of weld reinforcement heights makes the fluid behind it fluctuate greatly. The passivation films of both the base metal (BM) at the rear and the heat-affected zone (HAZ) are more prone to corrosion than those of the front BM and HAZ, and the passivation film is rougher.
Originality/value
The combination of test and simulation was used to explore the influence of electrochemical and hydrodynamic factors on the corrosion behaviour of titanium alloy-welded joints when welding residual height existed.
Subject
General Materials Science,General Chemical Engineering