3D study of intermetallics and their effect on the corrosion morphology of rheocast aluminium alloy

作者：Mingo B; Arrabal R^*; Pardo A; Matykina E; Skeldon P

来源：Materials Characterization, 2016, 112: 122-128.

DOI：10.1016/j.matchar.2015.12.006

• Aluminium
• Rheocast
• Corrosion
• Heat treatment
• 3D
• Tomography

In the present study, the effect of heat treatment T6.1 on the microstructure and corrosion behaviour of rheocast aluminium alloy A356 is investigated on the basis of 2D/3D characterization techniques and electrochemical and SKPFM measurements. Heat treatment strengthens the alpha-Al matrix, modifies the intermetallic particles and spheroidizes eutectic Si. These changes do not modify significantly the corrosion behaviour of the alloy. 3D SEM-Tomography clearly shows that the corrosion advances in the shape of narrow paths between closely spaced intermetallics without a major influence of eutectic Si.

• 出版日期2016-2