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- Title
Microstructural Evolution and Bio-Corrosion Behavior of a CP-Ti Processed by Multi-Pass of Severe Plastic Deformation.
- Authors
Vakili-Azghandi, Mojtaba; Famil Hatami, Mohammad; Hoseini Sabzevari, Seyed Amir; Moosavi Nezhad, S. M.; Mandanipour, Valiollah; Szpunar, Jerzy A.
- Abstract
The microstructure evaluation and phase transformation of multi-pass friction stir-processed (FSP) commercially pure titanium were investigated using optical microscopy, scanning electron microscopy equipped with a backscatter detector, and electron backscatter diffractometer. The microstructure characterization shows that the grain refinement mechanism changed with the increasing number of passes. The equiaxed α grains in the untreated sample changed to lath-shaped grains surrounded by serrated grain boundaries, and produced Widmanstätten morphology during the cooling cycle of FSP. The higher micro-hardness values and bio-corrosion resistances of the FSP-treated samples are due to their lower grain size compared to the untreated samples. Furthermore, the presence of lath-shaped Widmanstätten morphology shows a higher micro-hardness value and lower bio-corrosion resistance.
- Subjects
MATERIAL plasticity; CRYSTAL grain boundaries; GRAIN refinement; BACKSCATTERING; BIOMASS liquefaction; GRAIN size; CATHODIC protection
- Publication
JOM: The Journal of The Minerals, Metals & Materials Society (TMS), 2022, Vol 74, Issue 12, p4621
- ISSN
1047-4838
- Publication type
Article
- DOI
10.1007/s11837-022-05415-9