Comparative effect of grain size and texture on the corrosion behaviour of commercially pure titanium processed by equal channel angular pressing

2009 ◽  
Vol 51 (12) ◽  
pp. 3064-3067 ◽  
Author(s):  
Majid Hoseini ◽  
Arash Shahryari ◽  
Sasha Omanovic ◽  
Jerzy A. Szpunar
Keyword(s):  
Grain Size ◽  
Equal Channel Angular Pressing ◽  
Corrosion Behaviour ◽  
Pure Titanium ◽  
Commercially Pure Titanium ◽  
Comparative Effect ◽  
Angular Pressing ◽  
Commercially Pure

Effects of Grain Size and Texture on the Biocompatibility of Commercially Pure Titanium

2011 ◽  
Vol 702-703 ◽  
pp. 822-825 ◽  
Author(s):  
Majid Hoseini ◽  
Philippe Bocher ◽  
Fereshteh Azari ◽  
Hojatollah Vali ◽  
Jerzy A. Szpunar
Keyword(s):  
Grain Size ◽  
Cell Attachment ◽  
Pure Titanium ◽  
Commercially Pure Titanium ◽  
X Ray Diffraction ◽  
Fine Grained ◽  
Angular Pressing ◽  
Commercially Pure ◽  
Average Grain Size ◽  
Electron Back Scattered Diffraction

Ultra fine grained (UFG) pure titanium fabricated by severe plastic deformation techniques has been recently considered for biomedical applications. In this study, the effects of grain size and crystallographic orientation on the biocompatibility of commercially pure titanium have been evaluated. Samples having significant differences in terms of average grain size (from 0.4 to 20 mm) and crystallographic textures have been produced using equal channel angular pressing (ECAP) and compared. X-ray diffraction and electron back scattered diffraction (EBSD) were used to document the texture and microstructural properties. Cell attachment tests were done to study the biocompatibility of the samples using MC3T3 pre-osteoblast cells. The number of attached cells was found to be higher on the samples having more (0002) plane parallel to the surface regardless of their grain sizes. It was concluded that the texture plays a more significant role than the grain size in the biocompatibility of pure titanium.

Severe Plastic Deformation of Commercially Pure Titanium by Rotary-Die Equal Channel Angular Pressing Method

2006 ◽  
Vol 503-504 ◽  
pp. 717-720
Author(s):  
Akira Watazu ◽  
Ichinori Shigematsu ◽  
Aibin Ma ◽  
Yoshinori Nishida ◽  
Yong Jai Kwon ◽  
...  
Keyword(s):  
Plastic Deformation ◽  
Severe Plastic Deformation ◽  
Equal Channel Angular Pressing ◽  
Pure Titanium ◽  
Commercially Pure Titanium ◽  
Pressing Method ◽  
Fine Grained ◽  
Angular Pressing ◽  
Commercially Pure ◽  
Plastic Deformation Process

The commercially pure titanium cylindrical samples with a diameter of 11.5mm and a length of 24mm were processed by a new severe plastic deformation process, called the rotary-die equal channel angular pressing (RD-ECAP), under the condition of 773K, 2.4mm/s punch. By the RD-ECAP, ECAP processes of 1-4 passes were possible without sample removal and the temperature of cp-titanium could be simply controlled. After the RD-ECAP process, the cp-titanium samples had no crack. Fine-grained microstructures were observed in the sample on Y plane. Therefore the samples processed by RD-ECAP were expected to have high mechanical strength.

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