We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
The effect of electromagnetic stirring on the microstructure and corrosion of mischmetal modified AZ91D magnesium alloy.
- Authors
JIN, Y. X.; HUA, L.; XU, X.; PENG, Q.
- Abstract
The microstructure and corrosion behaviour of mischmetal modified AZ91D magnesium alloy in the presence or absence of a rotating electromagnetic field have been investigated. The study suggests that the size and volume fraction of the β (Mg17Al12) phase in the alloy decreases as magnetic field intensity increases. The immersion test results show that the mass loss for the alloy solidified in the absence of a magnetic filed is always larger than that for the alloy solidified under magnetic field. The electrochemical corrosion experiments indicate that the corrosion potential of the alloys increases from -- 1.56 to -1.51 V, while the corrosion current density decreases from 6.31 to 1.58 mA ⋅ cm-2, and the charge transfer resistance increases from 3.17 to 11.32 kΩ ⋅ cm² as the excitation voltage increases from 0 to 120 V. The enhancement of the corrosion resistance is attributed to the grain refinement, and to the volume fraction reduction of the β (Mg17Al12) phase under a rotating electromagnetic field.
- Subjects
MICROSTRUCTURE; CORROSION &; anti-corrosives; MISCHMETAL; MAGNESIUM alloys; ELECTROMAGNETIC fields
- Publication
Materials Science (0137-1339), 2009, Vol 27, Issue 2, p171
- ISSN
0137-1339
- Publication type
Article