The alloy is Ti-15Zr based, thermo-mechanically processed in order to improve some desired properties. In assessing the microstructure using EBSD, is it desirable to perform vibratory polishing or a Si-C polishing and etching would be enough?
Vibratory polishing is not a must, but is very useful and popular. Electropolishing and conventional polishing on polishing cloths using polishing suspensions also could achieve good quality samples for EBSD. Etching is usually not needed for EBSD samples (usually detrimental for EBSD).
Besides, ion polishing also could achieve very good sample preparation quality.
I have used this ion polishing machine to prepare EBSD samples, the patterns are pretty good. https://www.gatan.com/Ilion You also need to be very careful in storing your samples in a proper environment after the final polishing and before the EBSD scan.
You could refer to the following papers:
Article Microstructural characterization and mechanical properties o...
Article Abnormal effect of temperature on intermetallic compound lay...
Article Non-parabolic Al3Ti intermetallic layer growth on aluminum-t...
Article Interfacial Segregation of Alloying Elements During Dissimil...
Polishing with SiC abrasive papers will not allow performing an EBSD analysis. For EBSD, your sample must be carefully polished with either colloidal silica or a vibratory device.
Vibratory polishing is not a must, but is very useful and popular. Electropolishing and conventional polishing on polishing cloths using polishing suspensions also could achieve good quality samples for EBSD. Etching is usually not needed for EBSD samples (usually detrimental for EBSD).
Besides, ion polishing also could achieve very good sample preparation quality.
I have used this ion polishing machine to prepare EBSD samples, the patterns are pretty good. https://www.gatan.com/Ilion You also need to be very careful in storing your samples in a proper environment after the final polishing and before the EBSD scan.
You could refer to the following papers:
Article Microstructural characterization and mechanical properties o...
Article Abnormal effect of temperature on intermetallic compound lay...
Article Non-parabolic Al3Ti intermetallic layer growth on aluminum-t...
Article Interfacial Segregation of Alloying Elements During Dissimil...
To obtain the best EBSD results, the specimen's surface must be as flat as possible and all damage introduced in preparation must be removed. Sectioning is the most critical step in introducing damage. Electrolytic polishing introduces waviness on the surface and also attacks second phase particles.
Vibratory Polishing was developed to prepare high quality polished surfaces on a wide variety of materials and also for EBSD polishing and preparation application.
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