Before observing the morphology pictures diffraction pattern, is it possible to differentiate either from the color or shape which one is α and β in TEM observation?
Dear Hasfi F. Nurly,
Alpha phase of Ti is Hexagonal closed Packed structure and beta Phase is body centred cubic structure.
It is not possible to distinguish the Alpha phase and beta Phase by TEM .
To distinguish these two phases you need to Study XRD pattern.
Though, most commonly, alpha and beta Phase coexist. So, in XRD pattern , you will get peaks for the both. But you can calculate the abundance by proper XRD Analysis.
Thanks
N Das
Dear Hasfi F. Nurly,
Alpha phase of Ti is Hexagonal closed Packed structure and beta Phase is body centred cubic structure.
It is not possible to distinguish the Alpha phase and beta Phase by TEM .
To distinguish these two phases you need to Study XRD pattern.
Though, most commonly, alpha and beta Phase coexist. So, in XRD pattern , you will get peaks for the both. But you can calculate the abundance by proper XRD Analysis.
Thanks
N Das
u can differentiate via SAED attached with TEM or via HRTEM through noticing the line spacing of specific facet which indeed should be different for both. where from SAED by notifying the different diffraction of the white circles for both alpha and beta
Dear Dr. Hasfi F. Nurly ,
I suggest you to have a look at the following, interesting papers:
-An Overview of the Thermomechanical Processing of α/β Titanium Alloys: Current Status and Future Research Opportunities
S. L. Semiatin
Metallurgical and Materials Transactions A volume 51, pages2593–2625 (2020)
Available at: https://link.springer.com/article/10.1007/s11661-020-05625-3
-Microplasticity at Room Temperature in α/β Titanium Alloys
S. Hémery, P. Villechaise & D. Banerjee
Metallurgical and Materials Transactions A volume 51, pages4931–4969 (2020)
Available at: https://link.springer.com/article/10.1007/s11661-020-05945-4
-A Review of Metastable Beta Titanium Alloys
R. Prakash Kolli, and Arun Devaraj
Metals, 8(7), 506 (2018)
https://www.mdpi.com/2075-4701/8/7/506/htm
-Evolution of Secondary α Phase during Aging Treatment in Novel near β Ti-6Mo-5V-3Al-2Fe Alloy
Haoyu Zhang, Chuan Wang, Siqian Zhang, Ge Zhou, and Lijia Chen
Materials (Basel), 11(11): 2283 (2018)
Available at: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6267200/
My best regards, Pierluigi Traverso.
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