AMORPHIZATION OF TITANIUM AFTER SURFACE MECHANICAL ATTRITION TREATMENT | ||
| The International Conference on Applied Mechanics and Mechanical Engineering | ||
| Article 33, Volume 15, 15th International Conference on Applied Mechanics and Mechanical Engineering., May 2012, Pages 1-9 PDF (1.38 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/amme.2012.36937 | ||
| Authors | ||
| A. E. Hannora1; E. M. Duraia2 | ||
| 1Suez Canal University, Faculty of Petroleum and Mining Engineering, Engineering Science and Mathematics Department, Suez, Egypt, 43721. | ||
| 2Suez Canal University, Faculty of Science, Physics Department, Ismailia, Egypt. | ||
| Abstract | ||
| ABSTRACT Titanium substrates were subjected to severe plastic deformation using surface mechanical attrition treatment (SMAT) in a high energy ball mill. It is demonstrated that different mechanical treatments influence the microstructural and mechanical behaviour of the Ti-surface; moreover, solid state amorphization takes place. Amorphization take place concurrently in the surface region, and successive subdivision and amorphization finally result in the formation of well separated nanocrystalline and amorphous phases in the near surface. The average grain size of the nanocrystallites is about ~200 nm after 10 min of SMAT while ~18 nm after 20 min. Surface mechanically treatment of Ti-substrates were characterized by the X-Ray Diffraction (XRD) and scanning probe microscope (SPM) using atomic force microscopy (AFM). The microhardness of the mechanically treated Ti-surfaces is improved as a result of surface nanocrystallization. | ||
| Keywords | ||
| Titanium; surface mechanical attrition treatment; surface nanocrystallization; solid state amorphization; Microhardness | ||
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